Published online by Cambridge University Press: 22 January 2009
All the many definitions and descriptions of the akori bead published in the last five hundred years have proved inadequate. They appear either pedantically narrow, so that only a hundred years later or a hundred miles away beads also unquestionably called akori by West Africans by their very existence disprove such ‘precise’ characteristics, or, the other extreme, so broad as to be historically useless and logically unsatisfactory. Since all the akori records must be viewed as historical sources more or less reflecting the real situation in the past, we can hardly blame their authors for the akori puzzle; there must have been something wrong in the naming mechanism, in the factual relationship between the word and the thing. It is the main point of this article that the akori phenomenon originated in the existence of various types of natural glass in North and West Africa. An archetypal human attraction to this strange and rare substance can be observed in several culturally very different areas of the world. Understandably, at a later stage people made talismans and beads of this presumably protective material, yet the primeval veneration paid only to the mysterious matter, now under a more sophisticated but basically accidental form, remained the same. It was primarily this matter alone which West Africans tried to discover, test and obtain in European-imported artificial glass after 1500. The complex akori ‘problem’ is a telling and fascinating historical and logical expression of contact between different cultures.
1 For the most recent summary of research, state of knowledge and a bibliography of the topic, see Mauny, Raymond, ‘A propos de perles anciennes (“aigris”) recueillies par Maurice Delafosse avant 1914 en Côte d'lvoire’, Notes Africaines, 154 (Avril, 1977).Google Scholar
2 van der Sleen, W. G. N., A Handbook of Beads (Liège, 1973), 49.Google Scholar
3 To repeat even the most important items would seem superfluous in this context. See instead Fage, J. D., ‘Some remarks on beads and trade in Lower Guinea in the sixteenth and seventeenth centuries’, J. Afr. Hist., iii, 2 (1962)Google Scholar; Kalous, Milan, ‘Akori beads’, Baessler Archiv, Neue Folge, 16 (1968)Google Scholar; Mauny, ‘A propos de perles’.
4 van Landewijk, J. E. J. M., ‘What was the original Aggrey Bead? (A new Aggrey Bead hypothesis)’, Ghana Journal of Sociology, vi, 2 and vii, 1 (10, 1970 and 02, 1971), 96.Google Scholar
5 Ibid.
6 Ibid.
7 Ibid.
8 Ibid.
9 Ibid.
10 In Liberia ‘the main taboo was the prohibition against sexual intercourse during a four day period before going to the smelting site’, Schulze, Willi, ‘Early iron smelting among the northern Kpelle’, Liberian Studies Journal, iii, 2 (1970–1971), 124.Google Scholar
11 ‘Only boys or virgin girls were allowed to carry food to the men at the iron workings’ (Ibid.).
12 Among the Sukur in North-Eastern Nigeria who use black magnetite river sands as iron ore, slag is called tas chukuri – iron excrement. (Sassoon, Hamo, ‘Iron-smelting in the hill village of Sukur, North-Eastern Nigeria’, Man, lxiv, 215 (11–12, 1964), 174, 178.CrossRefGoogle Scholar
13 Klose, Heinrich, Togo unter deutscher Flagge (Berlin, 1899), 497–500CrossRefGoogle Scholar; see also Fisch, R., Nord-Togo und seine westliche Nachbarschaft (Basel, 1911), 160–63CrossRefGoogle Scholar, with a rare photograph of old furnaces, and Pole, Leonard M., ‘Iron-working apparatus and techniques: upper region of Ghana’, West African Journal of Archaeology, 5 (1975), 17–18, 25Google Scholar, describing slag produced locally as late as 1972. In Central Liberia, iron-smelting stopped before First World War (Schulze, , ‘Early iron smelting’, 126Google Scholar).
14 Klose, , Togo, 467.Google Scholar
15 Ibid., see also 485.
16 Landewijk, van, ‘What was the original Aggrey Bead’, 95.Google Scholar
17 Ibid.
18 Keil, FritzHochofenschlacke (Düsseldorf, 1963), 68.Google Scholar
19 Keil, , Hochofenschlacke, 58–9.Google Scholar
20 Persson, Rune, ‘Blast furnace slag as a raw material for glass melting and refining’, Glass Industry, xlvii, 10 (10, 1966), 539.Google Scholar
21 Keil, , Hochofenschlacke, 330.Google Scholar
22 See for example Shaw, Thurstan, Nigeria, Its Archaeology and Early History (London, 1978), 79–84.Google Scholar
23 Wagner, Percy A. and Gordon, Hugh S., ‘Further notes on ancient bronze smelters in the Waterberg District, Transvaal’, South African Journal of Science, 26 (1929), 570.Google Scholar
24 Tylecote, R. F., ‘The origin of iron smelting in Africa’, West African Journal of Archaeology, 5 (1975), 8.Google Scholar
25 Keil, , Hochofenschlacke, 11Google Scholar; Persson, , ‘Blast furnace slag’, 538–9.Google Scholar
26 Bartuška, M. und Pleiner, R., ‘Untersuchungen von Baustoffen und Schlacken aus den frühgeschichtlichen Rennöfen Böhmens und Mährens’, Technische Beiträge zur Archäologie, 2 (1965), 3–10.Google Scholar
27 Keil, , Hochofenschlacke, 11.Google Scholar
28 Landewijk, van, ‘What was the original Aggrey Bead’, 96.Google Scholar
29 The latter even van Landewijk confirms for his Ghanaian examples, Ibid.
30 See Kalous, , ‘Akori beads’, 91–2Google Scholar; Landewijk, van, ‘What was the original Aggrey Bead’, 92.Google Scholar
31 Winter, A., ‘Comment le verre s'altère avec le temps’, Science progrès, La nature, xciv, 3374 (1966)Google Scholar; Ottemann, J., ‘Zusammensetzung und Herkunft der Tektite und Impaktite’, Fortschritte der chemischen Forschung, vii, 2 (1966/1967), 432.Google Scholar
32 See Kalous, , ‘Akori beads’, 89–90.Google Scholar
33 Neuburg, Frederic, Glass in Antiquity (London, 1949), 2.Google Scholar
34 Fage, J. D., A History of Africa (London, 1978), 109.Google Scholar
35 Tischler, O., ‘Ueber Aggry-Perlen und über die Herstellung farbiger Gläser im Alterthume’, Schriften der Physikalisch-Ökonomischen Gesellschaft zu Königsberg i. Pr., 27 (1886).Google Scholar
36 ‘An “aggrey” bead is simply a bead which is valuable’, Lamb, A., in Calvocoressi, David, ‘Report on the Third Conference of West African archaeologists’, The West African Archaeological Newsletter, 12 (1970), 85.Google Scholar
37 Kalous, Milan, ‘A contribution to the problem of akori beads’, J. Afr. Hist., vii, 1 (1966), 65.Google Scholar
38 Bezborodov, M. A., Chemie und Technologie der antiken und mittelalterlichen Gläser (Mainz, 1975), 19.Google Scholar
39 Clayton, P. A. and Spencer, L. J., ‘Silica-glass from the Libyan Desert’, Mineralogical Magazine, xxiii, 144 (03, 1934), 507Google Scholar; Smit, A. F. J., ‘The origin of Lake Bosumtwi and some other problematic structures’, Ghana Journal of Science, 2 (1962), 194Google Scholar; Bezborodov, , Chemie und Technologie, 19Google Scholar. For some differences, see for example Spencer, L. J., ‘Tektites and silica-glass’, Mineralogical Magazine, xxv, 167 (1939), 432–3Google Scholar; Elliott, C. J., Moss, A. A., ‘Natural glass from Macusani, Peru’, Mineralogical Magazine, xxxv, 270 (1965), 423–4.Google Scholar
40 Barnes, Virgil E., ‘Tektite Strewn-Fields’, in Tektites, edited by O'Keefe, John A. (Chicago and London, 1963), 48.Google Scholar
41 O'Keefe, John und Weiskirchner, Walter, ‘Die Tektite als natürliche Gläser, über den heutigen Stand des Tektit-Problem’, Glastechnische Berichte, xliii, 5 (1970), 199.Google Scholar
42 Suess, Franz E., ‘Können die Tektite als Kunstprodukte gedeutet werden?’, Centralblatt für Mineralogie, Geologie und Paläontologie (1916), 574.Google Scholar
43 Bezborodov, , Chemie und Technologie, 26–9.Google Scholar
44 Vorobiev, G. G., ‘Zagadka tektitov’, Priroda, xlix, 6 (06, 1960), 76Google Scholar; Bouška, Vladimír, Faul, Henry, and Naeser, Charles W., ‘Size, shape and colour distribution of moldavites’, Acta Universitatis Carolinae-Geologica, 4 (1968), 282–3Google Scholar; Bezborodov, , Chemie und Technologie, 21.Google Scholar
45 Suess, Franz E., ‘Die Herkunft der Moldavite und verwandter Gläser’, Jahrbuch der Kaiserlich-Königlichen Geologischen Reichsanstalt, l, 2 (1900), 240.Google Scholar
46 Neuburg, , Glass, 1.Google Scholar
47 Glass, Billy P. and Heezen, Bruce C., ‘Tektites and geomagnetic reversals’, Scientific American, ccxvii, 1 (1967), 35.Google Scholar
48 Beyer, H. Otley, ‘The relation of tektites to archaeology‘, in Proceedings of the Fourth Far-Eastern Prehistory and the Anthropology Division of the Eighth Pacific Science Congresses Combined, part 1 (1956), 400.Google Scholar
49 The name is derived from the German name for the Czech river Vltava; in Czech these tektites are called vltaviny. They were the first to have been described (1788) and studied (Suess, 1900); theirs is the only finding area in Europe and still the most important one in the world.
50 Hanuš, F., ‘O moldavitech čili vltavínech z Čech a Moravy’, Rozpravy II. Třídy České Akademie, xxxvii, 24 (1928), 3.Google Scholar
51 Suess, , ‘Können die Tektite…’, 571Google Scholar; Bayer, , ‘The relation of tektites’, 400–1.Google Scholar
52 Harding, Anthony, ‘The earliest glass in Europe’, Archeologické rozhledy, xxiii, 2 (1971), 188–93.Google Scholar
53 Ibid.
54 Ibid.
55 Ibid.
56 ‘In Crete the first glass is imported and manufactured….c. 2600 B.C.…undoubtedly under Egyptian influence, but the Greek mainland has virtually nothing.… Knowledge of glass-working is unlikely to have spread to East and Central Europe from Egypt when Greece took little or no part in the transmission’ (Ibid.). Needless to say, the author does not even mention tektites.
57 See for example Priddy, A. J., ‘RS 63/32: an iron age site near Yelwa, Sokoto Province: preliminary report’, The West African Archaeological Newsletter, 12 (1970), 27.Google Scholar
58 Staudinger, , ‘Halskette von Glasperlen vom Nyassa-See und die dortige Bevölkerung’, Zeitschrift für Ethnologie, 25, Verhandlungen (1893), 612.Google Scholar
59 Beyer, , ‘The relation of tektites’, 371Google Scholar; see also von Koenigswald, G. H. R., ‘Tektite studies I, II’, Proceedings of the Koninklinjke Nederlandse Akademie van Wetenschappen, B, 43 (1960), 139, 142.Google Scholar
60 Beyer, , ‘The relation of tektites’, 406.Google Scholar
61 Ibid.
62 Taylor, Stuart Ross, ‘Tektites: a post Apollo view‘, Earth-Science Review, 9 (1973), 102.CrossRefGoogle Scholar
63 Beyer, , ‘The relation of tektites’, 391Google Scholar; see also 395–8.
64 Vorobiev, , ‘Zagadka tektitov’, 76.Google Scholar
65 Konta, Jiří, ‘Tektites in Bohemia (Central Europe) and their relation to the tektite-bearing sediments’, Acta Universitatis Carolinae — Geologica, 2 (1966), 82.Google Scholar
66 Beyer, , ‘The relation of tektites’, 391.Google Scholar
67 Cohen, Alvin J., ‘Asteroid- or Comet-Impact Hypothesis of Tektite Origin: The Moldavite Strewn-Fields’, in Tektites, 209–10.Google Scholar
68 Lacroix, Alfred, ‘Les tectites de l'Indochine et de ses abords et celles de la Côte d'Ivoire’, Archives du Muséum National d'Histoire Naturelle, xii, 1 (1935), 167–9Google Scholar; Barnes, , ‘Tektite Strewn-Fields’, 38–9.Google Scholar
69 Gentner, W., ‘Auf der Suche nach Kratergläsern, Tektiten und Meteoriten in Afrika’, Die Naturwissenschaften, liii, 12 (1966), 287.Google Scholar
70 Schnetzler, C. C. and Pinson, W. H., ‘The Chemical Composition of Tektites’, in Tektites, 101Google Scholar; Cuttitta, F., Carron, M. K. and Annell, C. S., ‘New data on selected Ivory Coast tektites’, Geochimica et Cosmochimica Acta, xxxvi, 11 (1972), 1300.Google Scholar
71 Lacroix, , ‘Les tectites’, 167–9.Google Scholar
72 Lacroix, , ‘Les tectites’, 168–9.Google Scholar
73 Barnes, , ‘Tektite Strewn-Fields’, 38–9.Google Scholar
74 Lacroix, , ‘Les tectites’, 168–9.Google Scholar
75 Beyer, , ‘The relation of Tektites’, 396–7.Google Scholar
76 Preuss, E. und von Freyhold, O. Meyer, ‘Die erste Tektitfund in Liberia’, Die Naturwissenschaften, lv, 4 (1968).Google Scholar
77 Ibid.
78 Preuss, E., ‘Verschleppte Tektite in Liberia’, Die Naturwissenschaften, lvi, 10 (1969), 512.CrossRefGoogle Scholar
79 ‘There is insufficient evidence for both a volcanic and a meteoritic origin for the Bosumtwi depression… to accept either of them as proven’: Smit, , ‘The origin’, 194.Google Scholar
80 Cuttitta, , Annell, Carron, ‘New data’, 1299.Google Scholar
81 Ottemann, , ‘Zusammensetzung’, 437.Google Scholar
82 See for example Perregaux, E., ‘Le lac Obosomtwe’, Bulletin de la Société Neuchateloise de Géographie, ii (1899), 116–8.Google Scholar
83 See Dieterlen, G., ‘Contribution à l'étude des forgerons en Afrique Occidentale’, Ecole Pratique des Hautes Etudes, Ve section — Sciences Religieuses, Annuaire 1965–1966, 73 (Paris, 1965), 21–8Google Scholar; Dieterlen, G., in Eric Guerrier, Essai sur la cosmogonie des Dogon, l'arche du Nommo (Paris, 1975), 194–6Google Scholar; Dieterlen, Germaine, ‘Contribution à l'étude des relations protohistoriques entre le Mande et l'actuel Ghana’, in Les Religions de la préhistoire, Actes du Valcamonica Symposium '72, (Capo di Ponte, 1975), 371–2Google Scholar; Rouch, Jean, ‘Le renard fou et le maître pâle’, in Systèmes de signes, Textes réunis en hommage à Germaine Dieterlen (Paris, 1978), 15–16.Google Scholar
84 ‘Ce territoire occupe, au coeur de la Côte d'Ivoire, un grand triangle de plus de 250 km de haut, sur environ 200 km de base.…La limite occidentale est constituée par le Bandama.…Des avant-gardes baoulé ont débordé le fleuve et se sont installées sur la rive droite…occupant les riches centres aurifères du Yaouré’, Miege, Jacques, ‘Notes de toponymie baoulé’, Etudes Eburnéennes, 3 (1954), 132.Google Scholar
85 Person, Y., ‘En quête d'une chronologie ivorienne’, in The Historian in Tropical Africa, edited with an introduction by Vansina, J., Mauny, R. and Thomas, L. V. (London–Ibadan–Accra, 1964), 334Google Scholar; Gauze, Antoine Louhoy Téty, ‘Contribution à l'histoire du peuplement de la Côte-d'Ivoire’, Annales de l'Université d'Abidjan, F (Ethnosociologie), i, 1 (1969), 9–10Google Scholar; van Dantzig, A., ‘South-western Ghana and the Akan-speaking areas of the Ivory Coast: a survey of the historical evidence’, in Proceedings of the Seminar on Ghanaian Historiography and Historical Research, 20–22nd May, 1976, Edited by Hunwick, J. O. (Legon, 1977), 68.Google Scholar
86 Barnes, ‘Tektite Strewn-Fields’, 39. ‘An old and long-disused camel track crosses the southern end of the silica-glass area, going from the oasis of Kufara…in Cyrenaica to Abu Mungar in Egypt.… In 1846 at two or three days out from Kufara there were seen traces of an ancient route and a great quantity of fragments of glass’: Spencer, , ‘Tektites’, 432–3.Google Scholar
87 Ottemann, , ‘Zusammensetzung’, 434–5.Google Scholar
88 Spencer, , ‘Tektites’, 432–5.Google Scholar
89 Smith, W. Campbell and Hey, Max H., ‘The silica-glass from the crater of Aouelloul (Adrar, western Sahara)’, Bulletin de l'Ifan, xiv, 3 (1952), 762.Google Scholar
90 ‘Crafts of Bida’, Nigeria magazine, 49 (1956), 147Google Scholar. Also, concerning the Akan, one might perhaps wonder whether ‘a specially hard, high-grade kind involving much labour in the working, called namsoo… scarce and highly prized’ was really bauxite. (Shaw, C. T., ‘Bead-making with a bow-drill in the Gold Coast’, Journal of the Royal Anthropological Institute, 75 (1945), 45.)Google Scholar
91 Recueil des sources arabes concernant l'Afrique Occidentale du VIIIe au XVIe siècle (Bilād al-Sudān), Traduction et notes ParCuoq, Joseph M. (Paris, 1975), 107–8.Google Scholar
92 Recueil, 131–45.Google Scholar
93 Glass, Neuburg, I.Google Scholar
94 Müller, Wilhelm Joh., Die Africanische auff der Guineischen Gold-Cust gelegene Landschafft Fetu (Hamburg, 1675), 153Google Scholar; see also Die Neuntzehende Schiffarth Inhaltendt Fünf Schiffarthen Samuel Brauns…in Africam… (Franckfurt am Meyn, 1626), 36 (a brief passage from this and references to two other sources in Kalous, ‘Akori beads’, 94).
95 It is worth mentioning in this context that European traders also imported amber. For three pounds of ‘large yellow amber’ a slave could be obtained in eighteenth century Senegal (The Sieur Brüe's Attempt for a Discovery of the Lake Kayor in 1714, in A New General Collection of Voyages and Travels…, Collected by Astley, Thomas, ii (London, 1745, 1968), 123Google Scholar); see also Nachtigal, Gustav, Sahara und Sudan, 3 vols. (Leipzig, 1889), iii, 162, 322–3.Google Scholar
96 Freeman, Richard Austin, Travels and Life in Ashanti and Jaman (London, 1898, 1967), 399–400.CrossRefGoogle Scholar
97 The Second Voyage to Guinea in 1554, by Captain Lok…, John, in A New General Collection, 1, 148.Google Scholar
98 Ife stone monuments were probably first mentioned by Römer, Ludwig Ferdinand, Nachrichten von der Küste Guinea (Kopenhagen und Leipzig, 1769), 16Google Scholar (Kalous, Milan, ‘A contribution to the problem of the hypothetical connection between Ife and the Gold Coast before fifteenth century’, Archiv Orientální, xxxv, 4 (1967), 549–55Google Scholar.)
99 Richard, and Lander, John, Journal of an Expedition to Explore the Course and Termination of the Niger…, 3 vols. (London, 1832), i, 180–1.Google Scholar
100 Cuttitta, , Carron, , Annell, , ‘New data’, 1299.Google Scholar
101 Ife glass beads recovered from the ground were mentioned already by Merensky, , ‘Ueber die alten Schmuckkorallen der afrikanischen Völker’, Zeitschrift für Ethnologie (Verhandlungen), 14 (1882), 544Google Scholar. Almost a hundred years after this intelligent article the contemporary published accounts of the Ife glass industry (see for example Garlake, P. S., ‘Excavations at Obalara's Land, Ife: an interim report’, West African Journal of Archaeology, 4 (1974), 139Google Scholar: Shaw, , Nigeria, 146–7Google Scholar) must necessarily appear rather unintelligent: no chemical analyses (in the first item) and no photographs (in the second). More than twenty-five years after ‘extensive exploration…carried out in the grove of Olokon, where quantities of glass crucibles and glass beads were found over a very wide area’ (Fagg, B. E. B., ‘Some archaeological problems at Ife’ in Conférence Internationale des Africanistes de l'Ouest. Ve réunion Abidjan 1953, Compte rendu, 125–6Google Scholar) one would normally expect some more tangible results. In view of this archeological silence it is rather irritating to read that an Ife ‘ornament made of ground red and blue glass and set in thin copper mount…may prove of considerable interest’ (Ibid.). Also, it appears now that Ife was not the only place in Nigeria where glass was produced locally, perhaps already before our millennium (see Hartle, Donald D. ‘Preliminary report of the university of lbadan's Kainji rescue archaeology project, 1968A’, The West African Archaeological Newsletter, 12 (1970), 15–18)Google Scholar
102 Na'Ibi, Shuaibu and Abuja, Hassan Dallatun, The Gwari, Gade and Koro Tribes (Ibadan, 1969), 31–2.Google Scholar
103 Indiae Orientalis pars VI. Veram et historicam descriptionem avriferi regni Gvineae, ad Africam pertinentis…, Studio & opera M. Gotardi Arthvs Dantiscani. Illustrata…lucem edita à Iohanne Theodoro & Iohanne Israel de Bry fratribus (Francofurti ad Moenum, 1604), 30.Google Scholar
104 Daaku, Kwamu Yeboa, Trade and Politics on the Gold Coast 1600–1720 (Oxford, 1970), 25.Google Scholar
105 Fage, , ‘Some remarks on beads’, 345.Google Scholar
106 Fage, , ‘Some remarks on beads’, 346.Google Scholar
107 Wild, R. P., ‘A method of bead-making practised in the Gold Coast’, Man, xxxvii, 115 (1937Google Scholar); Sinclair, G. E., ‘A method of bead-making in Ashanti’, Man, xxxix, 111 (1939Google Scholar); Lamb, Alastair, ‘Krobo powder-glass beads’, African Arts, ix, 3 (1976).Google Scholar
108 Wild, , ‘A method of bead-making’, 96–7Google Scholar. See also Sinclair, , ‘A method of bead-making’, 128Google Scholar. ‘Imitation bota and bodom beads are still manufactured to-day with glass powder imported from England’, Meyerowitz, Eva L. R., The Sacred State of the Akan (London, 1951), 50.Google Scholar
109 The Sieur Brüe's Attempt, 123.Google Scholar
110 Ibid.
111 Ibid.
112 See the calculations in Kalous, , ‘Akori beads’, 91.Google Scholar
113 Monrad, H. E., Gemälde der Küste von Guinea und der Einwohner derselben, wie auch der dänischen Kolonien auf dieser Küste…in… 1805–9 (Weimer, 1824), 197–8.Google Scholar
114 Jobson, Richard, The Golden Trade or a Discovery of the River Gambra…in travelling part of the yeares 1620 and 1621 (London, 1932), 110.Google Scholar
115 Basden, G. T., Niger Ibos (London, 1938, 1966), 198.Google Scholar
116 Kalous, , ‘A contribution…akori beads’, 65–6.Google Scholar
117 Bezborodov, , Chemie und Technologie, 17–18.Google Scholar
118 Landewijk, van, ‘What was the original Aggrey Bead’, 92.Google Scholar
119 Ibid.
120 Ibid., 94.
121 I do not think it necessary to repeat here the references to the various tektites authorities of the ‘scientific’ part of this article where they can be easily identified.
122 ‘The feature of this glass is the yellow tint it displays when held to the light’ (Meek, C. K., The Northern Tribes of Nigeria, 2 vols. (London, 1925, 1971), i, 55Google Scholar). This however concerns ‘blue tubular glass…found at varying depths’ in Bauchi (Ibid.).
123 van Landewijk, , ‘What was the original Aggrey Bead’, 92.Google Scholar
124 Ibid.
125 Ibid.
126 Ibid.
127 Ibid.
128 Staudinger, P., ‘Über die “Bützflether” Überfangperle’, Praehistorische Zeitschrift, xix, 3/4 (1928), 375.Google Scholar
129 van Landewijk, , ‘What was the original Aggrey Bead’, 92.Google Scholar
130 Ibid., 93.
131 Forbes, Frederick E., Dahomey and the Dahomans…in…1849 and 1850, 2 vols. (London, 1966), i, 28–9.Google Scholar
132 About the rainbow-serpent beads see also Steinemann, J., ‘Einige Notizen über die Sklavenküste von West-Afrika’, Mittheilungen der Kaiserlich-Königlichen Geographischen Gesellschaft (Abhandlungen), 7 (1863), 38–9Google Scholar; Ellis, A. B., The Ewe-Speaking Peoples of the Slave Coast of West Africa (1890, 1970), 47–9Google Scholar; Plehn, Rudolf, Beiträge zur Völkerkunde des Togo-Gebietes (Halle, 1898), 7–13CrossRefGoogle Scholar; Zech, Graf v., ‘Vermischte Notizen über Togo und das Togohinterland’, Mittheilungen aus den deutschen Schutzgebieten, ix, 2 (1898), 41–2Google Scholar; Spieth, Jakob, Die Ewe-Stämme (Berlin, 1906), 553–4CrossRefGoogle Scholar; Dahse, Johannes, ‘Ein zweites Goldland Salomos, Vorstudien zur Geschichte Westafrikas’, Zeitschrift für Ethnologie, 43 (1911), 48–9Google Scholar; Quénum, Maximilien, Au pays des Fons (Paris, 1938), 71Google Scholar; Dunglas, E., ‘Perles anciennes trouvées au Dahomey’, in Première Conféerence Internationale des Africanistes de l'Ouest, Comptes Rendus, ii (Dakar, 1951), 432.Google Scholar
133 Spieth, J., Die Religion der Eweer in Togo (Leipzig, 1911), 33.Google Scholar
134 Beyer, , ‘The relation of tektites’, 391.Google Scholar
135 Bowdich, T. Edward, Mission from Cape Coast Castle to Ashantee, Edited, with Notes and an Introduction by Ward, W. E. F. (London, 1966), 267Google Scholar. See also Freeman, , Travels, 403–5Google Scholar; Claridge, W. Walton, A History of the Gold Coast and Ashanti, 2 vols. (London, 1915, 1964), i, 27Google Scholar; Cardinall, A. W., Tales Told in Togoland (Oxford–London, 1931), 40.Google Scholar
136 Quénum, , Au pays des Fons, 71.Google Scholar
137 See striking parallels in Dieterlen, ‘Contribution à l'étude des relations protohistoriques entre le Mande et l'actuel Ghana’, 368–73.
138 Bowdich, , Mission, 266–7Google Scholar. See also Rattray, R. S., Religion and Art in Ashanti (Kumasi–London, 1927, 1954), 22Google Scholar. ‘Another use for them is to grind a number to powder, and after the body of the deceased had been well greased, to paint the body with the dust of the aggrey beads’, Macdonald, George, The Gold Coast Past and Present (London, New York and Bombay, 1898), 60.Google Scholar
139 Kalous, Milan, ‘Powder-glass bodom beads?’, African Arts, xii, 2 (1979).Google Scholar
140 Macdonald, , The Gold Coast, 60.Google Scholar
141 Mauny, , ‘A propos de perles’, 39.Google Scholar
142 Ibid.
143 Even if I did not call exactly for them, I did point out, more than ten years ago, that Frobenius in 1910 knew approximately as much about Ife glass industry as the leading Ife expert in 1967 (Kalous, Milan, ‘Frobenius, Willett and Ife’, J. Afr. Hist., ix, 4 (1968), 662Google Scholar) It does not seem that the situation has changed very much since then.
144 See Shaw, Thurstan, Igbo-Ukwu, an account of archaeological discoveries in eastern Nigeria, 2 vols. (London, 1970), i, 225–39.Google Scholar
145 Shaw, , Igbo-Ukwu, i, 323–4.Google Scholar
146 Out of thirty-six types and subtypes of the Igbo-Ukwu glass beads only fourteen were analysed as to their Na2O and K2O contents (Shaw, , Igbo-Ukwu, i, 323Google Scholar) and only six were subject to a detailed chemical analysis (Shaw, , Igbo-Ukwu, i, 324).Google Scholar
147 van der Sleen, A Handbook.
148 Neumann, Bernhard, Kotyga, Gertrud, ‘Antike Gläser, ihre Zusammensetzung und Färbung’, Zeitschrift für angewandte Chemie, xxxviii, 36, 38 (1925), 776CrossRefGoogle Scholar, 860 and the later articles by the main author in the same Journal; Ankner, Dietrich, ‘Chemische und physikalische Untersuchungen an vor- und frühgeschichtlichen Gläsern I’, Technische Beiträge zur Archäologie, 2 (1965)Google Scholar; Dikshit, M. G., History of Indian Glass (Bombay, 1969), 152–9Google Scholar; Bezborodov, Chemie und Technologie.