222 Royal' Academy of Sciences of Paris. 



theory of heat and on corpuscular mechanism. M. Desmasi- 

 eres, of Lille, communicated his microscopic and physiological 

 researches on the genus Mycoderma. — M. Thenard read, for 

 himself and M. D' Arcet, a memoir on the employment of fatty 

 bodies as expellents of water in painting on stone and on 

 plaster for the seasoning of low and damp places. — M. Hu- 

 zard read a notice by M. Gregory on the scientific works of 

 M. Vassali-Eandi. — M. Brousard read a memoir on the in- 

 ternal navigation of France. — M. Cauchy presented two me- 

 moirs, one on a new kind of calculus, resembling the infini- 

 tesimal, and the other, on the development of functions in pe- 

 riodical series. — M. Meirieux read a note on a lithontriptic 

 instrument. 



March 6. — M. Arago gave an account of Mrs. Somerville's 

 experiments on the magnetism of a needle by the violet rays of 

 the solar spectrum. — M. Laignel submitted a mechanical sy- 

 stem for the ascending of rivers. — M. de Montlivault read a 

 cosmological memoir on the cause and nature of the celestial 

 motions and of light. — MM. Bosc and Dumeril gave a fa- 

 vourable report on a memoir by MM. Quoy and Gaymard 

 relating to the coral igenous zoophytes. 



March 13. — The minister of the interior laid before the 

 Academy a memoir, by the Agricultural Society of the De- 

 partment of the Rhone, on the invention of paragreles, and 

 requested the Academy to make known its opinion on the pro- 

 bable success of these new preservatives ; for which purpose it 

 was referred to the members of the section of general physics. 

 — M. Ramond read a memoir on the meteorology of the Pic- 

 du-Midi. — M. Becquerel read a memoir entitled Researches 

 on the electrical effects of contact produced by changes of 

 temperature, and application which may be made of them for 

 the determination of high temperatures. — MM. Fournier, 

 Ampere and Cauchy, made a favourable report on M. Libri's 

 memoir on the theory of numbers. — M. P. Garnier read a 

 memoir on a new free remontoir escapement, and on a new 

 compensation. — A memoir by M. de Beaujeu was read, enti- 

 tled, Some observations on the manufacture of sugar from 

 beet. 



March 20; — M. Malmenaide presented a memoir, entitled 

 A table of plane surfaces. — Dr. Barry read a memoir on 

 exterior absorption. — M. Cauchy deposited a memoir on the 

 resultant and the projections of several forces applied to the 

 same point. 



March 27. — General Brisbane transmitted to the Academy 

 some astronomical observations made at Paramatta, in 1825. 

 — M. Bussy was elected joint-professor at the School of 



Pharmacy 



