For French chemistry the early 1770's were lively years of discovery and controversy. Two neglected areas of research were opened up in 1772 with the publication of the Digressions académiques by Louis-Bernard Guyton de Morveau and with the first knowledge of later British pneumatic chemistry. Guyton's book established the general fact of weight-gain in metals upon calcination, thereby raising the problem of reconciling this gain with simultaneous loss of phlogiston. The spread of pneumatic chemistry, which proceeded rapidly in 1773, stimulated a renewed interest in the nature of air and its part in chemical composition. It was, of course, Antoine Laurent Lavoisier who perceived a relationship between these two developments—one which he believed would revolutionize the current understanding of chemical processes. In 1772 Lavoisier began the series of investigations which culminated in his Opuscules physiques et chimiques (1774), in which he demonstrated that weight-gain in both calcination and combustion is correlated with absorption of an equal weight of air.

A recently published book, James Prescott Joule and the concept of energy, by H. J. Steffens, includes a chapter entitled ‘Conjectures on J. R. Mayer and J. P. Joule’. In it the author raises an intriguing possibility.

A great deal has been written concerning the impact of new technology on traditional publishing processes, leading to new forms of electronic publishing. Much less thought has been given to the effects of computerization on archival material. Yet, increasingly, records previously held in hard-copy form are being stored and handled electronically; this is particularly true of information in the scientific/technological/industrial area. In coming years, this will affect the work both of the archivist and of the historian seeking to use these records. It makes sense to try and anticipate the problems that computerization may create.