662 Zoological Proceedings of Socieiies. 



*^ Give the general and comparative history of the circulation of 

 the blood, in the four classes of vertebrated animals, before and 

 after birth, and at different ages." He also began the reading 

 of a memoir, On the general views respecting monstrosity^ with 

 the description of a new kind observed in the human species^ 

 named aspalasoiiie. 



Junes. — The Academy being informed by M. Arago, that 

 he now had at Paris two living Camelions, appointed a Committee 

 to make experiments on the changes of colour which the skin of 

 these animals undergoes. Mr. D. Barry, staff-surgeon in the 

 English service, read a memoir On the motion of the blood in the 

 veins. 



June 13. — M. Bosc gave a report on M. Duveau's New re- 

 marches on the Natural History of the Aphides. 



June ^7. —M. Zugenbuhler claimed, by letter, the priority of 

 the ideas stated in Mn Barry's paper above mentioned; trans- 

 mitting a copy of a dissertation printed by him six years before, 

 and entitled " Dissr^rtatio de motu sanguinis per venas." 



July 4. — M. Bussy read a memoir On the action of heat upon 

 the fatty bodies. 



July 11. — M. Dupuy read his first memoir On the distillation of 

 the fatty bodies. 



July 18. — M. Cuvter made a favourable report on the Zoological 

 Collections brought home by the naturalists attached to the late 

 expedition under M. Duperrey. 



' August 1. — M. de St. Hilaire read an extract from a work on 

 human monsters characterized by the absence of the arbrospinal 

 marrow, and named anencephala* 



August 8. — A memoir by M.M. Quoy and Gaymard was read, 

 entitled, Observations on certain Crustacea, considered with re- 

 gard to their habits and geographical distribution ; succeeded by 

 the description of some new species^ discovered during M. Frey* 

 cinefs circumnavigation of the globe. 



Septefnber 12. — M. G. de St. Hilaire commenced the reading 

 of a memoir entitled On the beings of the intermediate degrees 

 of the animal scale ^ which respire both in the air and under water ^ 

 and which possess respiratory organs of two kinds ^ developed to a 



