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Published online by Cambridge University Press: 01 August 2014
The author made use ot parochial archives for a genetic research. All parochial archives keep the registers of the newborn, the dead, the marriages, the confirmands, the amounting of the population in a parish. According to the canon 1813 (§ 1), these registers are public and ecclesiastical documents, and they form a mine of biological and genetic information too.
In this work the author, by making use of parochial archives in Busnago (Milan), — starting in 1634 — has controlled the proceeding of multiple pregnancies. These appear to have a percentage of 1,53% — superior to that of the Italian population (1, 13%) and to that of the human population officially numbered (1, 25% according to Caullery).
During the three centuries considered by the author, the proceeding of these multiple pregnancies shows a certain periodicity, but, from 1764 to 1804, there is an abrupt fall occuring at the same time of an endemic pellagrous disease. A further inquiry on 23 twin-pairs selected during the last forty years, and a research during the three centuries considered did not show any relationship between consanguinity and multiple pregnancies. On the contrary, this research showed a periodical proceeding of the frequency of multiple pregnancies on the total of the newborn with cusps, every quarter of a century, which seems to support the hypothesis of the existence of a dominant hereditary factor. At last, the greatest number of percentage of multiple pregnancies on the mother's side, as compared with the father's one, makes us think of a hereditary factor on the mother's side.
1 Cappello, : Summa Juris Canonici 2° pag. 96, Roma 1939 Google Scholar. Ciprotti, Chelodi-P.: Jus Canonicum de Personis, Vicenza 1942 Google Scholar.
2 La parrocchia di S. Giovanni Evangelista in Busnago è composta di 2.200 abitanti, ha una superficie di mq. 584.000 ed è situata a 16 Km. da Monza sulla provinciale Monza-Bergamo. Appartiene alla diocesi di Milano. Fino al 3 luglio 1886 l'attuale parrocchia comprendeva anche quella dei SS. Ambrogio e Carlo in Roncello separatasi appunto allora e attualmente composta di 1.200 abitanti e con una superficie di mq. 374.000.
3 Iniziano col 10 febbraio 1632 (fino al 1634 però le annotazioni mi sono sembrate lacunose, infatti dal 32 al 34 sono annotati in tutto 7 battesimi) per questo ho iniziato la mia verifica solo col 1634.
4 Gedda, : Studio dei Gemelli, pag. 161, Roma 1951 Google Scholar.
5 L'I,13% secondo Caullery, , La Biologie des jumeaux, pag.59 Google Scholar, Parigi 1945 e anche secondo Franzi, , L'Eredità nella Patologia e nella Clinica, Bologna 1942 Google Scholar.
6 L'1,25% circa secondo le statistiche riportate da Gedda, Op. cit., cap. IV.
7 Secondo Dos, riportato da Gedda, Op. cit., pag. 161, è dell'1,11%.
8 Franzi, Op. cit.
9 Caullery, Op. cit., pag. 72.
10 Il 3 luglio 1886 dalla parrocchia di S. Giovanni Evangelista in Busnago si staccò la parrocchia dei SS. Ambrogio e Carlo in Roncello.
11 Caullery, Op. cit., pag. 59 e Franzi, op. cit.
12 Riportato da Gedda, Op. cit., pag. 161.
13 Op. cit., pag. 59.
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