306 Royal Academy of Sciences of Paris. 



der the name of Cholera-Morbus." — M. Bory de St. Vincent 

 communicated his observations on the spermatic animalcula, 

 for which he proposed the generic name of Zoospermes. — M. 

 de Lassis read a Memoir, entitled " The Doctrine of Epi- 

 demic Maladies." 



May 3. — M. Julia Fontenelle transmitted his manuscript 

 translations of several Memoirs on the Yellow Fever, by the 

 Physicians of Barcelona. — M. G. Saint Hilaire read an ad- 

 ditional Memoir on the Nutrition of the Marsupialia. — M. 

 Fresnel presented to the Academy a Pharos-light with a fixed 

 burner of the third kind, invented by him. — M. Bailly read a 

 Memoir, entitled " Description of the filaments with which 

 the Lophius piscatorius seizes fish :" and M. GeofFroy made 

 some remarks on the subject. 



May 10. — The Minister of Marine communicated in manu- 

 script M. Bagay's new logarithmic tables, and requested the 

 Academy to examine them. — The Marshal Duke of Ragusa 

 read a Report on the experiments made at Brest on the new 

 kind of Artillery proposed by M. Paixhans. — M. Permon, of 

 Lyons, transmitted a Memoir on the cause of the mephitic 

 effects of marshes. — M. Percy communicated some observa- 

 tions on a young person named Trezel, deaf and dumb from 

 the birth, whom Dr. Deleau had enabled to hear and to speak. 



May 10. — M. Cuviermade a verbal Report on several Me- 

 moirs formerly presented in manuscript, but since printed by 

 their respective authors. These were the Memoirs by M. 

 Flourens, On the Functions of the different Parts of the Nervous 

 System ,■ those of M. Desmoulins, On the Anatomical Relations 

 of that System ,■ and lastly, a Memoir by M. Bailly, entitled, 

 A Treatise on the Comparative Anatomy and Physiology of the 

 Nervous System, in the four Classes of Vertebrated Animals. — 

 M. Audouard read a Supplement to his Considerations on the 

 Origin and Cause of the Yellow Fever. 



May 17. — M. Vicat communicated a Memoir on a perio- 

 dic thermometrical movement observed in the arches of the 

 Bridge of Souillac : M. Bonnemaison, an apothecary at Quim- 

 per, a manuscript work on the Hydrophytes locidees which 

 grow in France ; and M. le Baron Blin a note on the precise 

 determination of the grave resonances of two given sounds. — 

 M. Vauquelin, in the name of a Commission, read a Report on 

 M. Payen's analysis of Tupinamba Root. — M. G. St. Hilaire 

 communicated a Report on the Memoir of M. Bailly concerning 

 the Lophius. Flecommences by showing that Aristotle was ac- 

 quainted with the habits of this animal. In the works of that 

 princf of naturalists is a passage to the following effect: "There 



