27 Ibid., 450. This passage surely could not have escaped the attention of Meldrum. That he failed to mention it is probably because he thought it to be an addition made by Lavoisier sometime after 1772. In discussing this essay (and an earlier companion), Meldrum warns: “It is necessary to remark that these two memoirs were published, not by Lavoisier but by Dumas and that, as printed [in the Oeuvres] they are not identical with what was presented to the Académie des Sciences. Both memoirs are known to have been altered, the first much more than the second”, op. cit. (1), xix, 349.Google Scholar
Further research, however, would have shown Meldrum that, whatever additions Lavoisier might have made, this particular passage with its mention of Hales and Eller and its reflections on the problem of the air's fixation existed in the original manuscript version that Lavoisier gave Grandjean de Fouchy on 20 December 1768. This signed and dated copy still exists (MSS. Ac. Sci., Lavoisier, 1405) with the above quotation (fol. 50–51) exactly as it was published in the Oeuvres (excepting, of course, minor changes of spelling and punctuation). Furthermore, it is obvious from inspection of the manuscript that the passage could not have been inserted at a later date. It is an integral part of the text (i.e. not a marginal notation), written in a hand consistent with the remainder of the document and in the same ink. The manuscript was bound with ribbon and Grandjean de Fouchy's signature appears with the date both on the first and last of its numbered pages.