S08 Royal Academy of Sciences of Paris, 



shortly communicate the results of his researches on muscu- 

 lar contraction, on the action of various agents on the nervous 

 system and on muscular fibre, and on the formation of white 

 globules analogous to the white globules of the blood. — 

 M. Collin presented a memoir on the fermentation of sugar. 

 — M. Cauchy presented a new memoir on the integration of 

 linear equations and on the vibrations of elastic rectangular 

 plates. — M. Giron de Buzareingue read the first part of a 

 memoir on the generation of animals. — M. Bailly communi- 

 cated some statistic researches on intermittent fevers. 



Jan. 24. — The Academy received a memoir, by M. Paul Co- 

 quere, on an experiment in acoustics, for discovering the mu- 

 tual relation and the number of grave harmonic sounds pro- 

 duced by the co-existence of two or more given sounds; and also 

 a memoir from M. Richardot, ofKcer of artillery, on an econo- 

 mical method of erecting paratonnerres. — M. Raspail read 

 an Essay towards a classification of the Ciraminece, founded 

 on the physiological study of the characters of this family. — 

 M. Gaymard read some observations on the Biphores and 

 on the Bcroes. — M. Latreille communicated a notice respect- 

 ing an insect of the genus Brachycerus, which is considered as 

 a taUsman by the females of the kingdom of Berta. — M. Las- 

 sis read a note on the difference of opinion among physicians 

 relative to the entire subject of epidemic disorders. 



Jan. 31. — The Academy received from Professor Briot, of 

 Besan^on, two memoirs intended to compete jointly for the 

 prize founded by M. de Monthyon : one, On a new forceps ; 

 the other, entitled Considerations on the lachrymal ducts, tlieir 

 disorders, and the means of curing them. — M. Croyset, offi- 

 cer of health at Cus, transmitted (for the same purpose) a box 

 containing various instruments. — M. Morin, of Strasburg, 

 presented two pamphlets : one. On oysters, and the means of 

 keeping them fresh ; the other, On aerostation. — M. Voisard, 

 of Metz, presented his researches on the determination of the 

 functions of two variables ; and Mr. S. Pugh, his considera- 

 tions on caloric and on light. — M. Bosc, in the name of a 

 commission, made a favourable report on the second part of 

 the History of Lichens by M. Delise. — M. Dumeril, in the 

 name of a commission, made a report on the method of curing 

 the Malformation of the anus. — M. Becquerel read some re- 

 searches on the conducting power of the metals for electri- 

 city. — M. Cauchy presented a memoir on anew kind of cal- 

 culus resembling the infinitesimal calculus. — M. Colin read a 

 memoir on the vinous fermentation. — M. Delapylaie com- 

 menced the reading of a memoir on the Encornet of the French 

 fishermen. 



Feb. 



