Annales des Sciences Naturelles. 487 



laya. A translation from the Journal of the Asiatic Society of Bengal 



Rusconi sur les changemens que les ceufs des Poissons eprouvant avant qu'ils 

 aient pris la forme d'embryon. A translation from the Bibliotheca Italiana, and 



already noticed in our analysis of the Archives of Muller. Note additionnelle 



au memoire de M. Duvernoy sur quelques particularities du systeme sanguin ab- 

 dominal et du canal alimentaire de plusieurs Poissons cartilagineux. Analyse 



des travaux anatomiques, physiologiques et zoologiques, presentes a V Academie des 

 Sciences pendant le mois de Mai 1836 : viz., Marion de Proces sur I'Orang : 

 Bassi sur la Muscardine, a disease of the silk-worm, produced by the vegetation 

 of a species of fungus (Botrytis Bassiana) which germinates in the living cater- 

 pillar, and invariably proves fatal in its developement : Blainviele sur les em- 

 preintes trouvees dans le gres bigarre : Jacquemin sur I'anatomie des Oiseaux : 

 Bourgery et Begin sur la structure des poumons .■ Observations sur les Fausses- 

 Galles par M. Vallot. 



The June Number contains only one original paper, viz — Memoire sur la vie 

 intra-branchiale des petites Anodontes, par M. A. de Quatrefages, who traces, 

 with minute and scrupulous care, the changes which the ova undergo, from the 

 period of their entrance into the branchiae, until the young Anodontes are en- 

 tirely separated from their parent. It has been long a disputed question, by what 

 passage the ova, on their issuing from the ovary, got access to the branchiae, for 

 no anatomist was able to discover any ducts or pores indisputably appropriate to 

 such a purpose ; and no wonder, since M. De Quatrefages appears to have as- 

 certained that the ova are first expelled from the body through the anal tube, 

 and again sucked in by the stream of water which flows in between the branchial 

 lamellae for the purpose of respiration. This stream deposits them in the folds 

 of the external lamellae, which are the first to receive the water. Here the ova 

 insinuate themselves (it is not mentioned how) into the loculoe or cells of these 

 organs, which are loaded with them disposed in regular series, while very few, 

 or more commonly none at all, are to be found in the internal branchial lamellae, 

 or in the cloak. A moderately sized Anodon will lay, it is calculated, rather 

 more than 14000 ova, and a larger individual not less than 20000. They are ex- 

 pelled at intervals of half and three-quarters of an hour in small clusters, and the 

 process of oviposition may last for twenty-four hours at least — Without trans- 

 lating the author, who is unusually concise, it would be impossible to communi- 

 cate to our readers a correct idea of the changes which the ova experience in their 

 developement, and which are carefully described and delineated, as these were 

 observed from day to day ; but the omission at present is less to be regretted, 

 for we shall probably give a translation of the paper in a future number. We 

 can now only remark, that the embryo young appear to remain about 125 days 

 in the branchiae when the mother delivers herself of her numerous progeny. 

 The delivery occupies four or five days — The rest of the number is filled with 

 a translation of Mr Owen's paper on the Entozoa, from the Transactions of the 

 Zoological Society ; and of a paper, by Messrs Falconer and Cantley, on a 

 new genus of fossil ruminant from the Himalaya mountains, named Sivatherium 

 giganteum. The original will be found in the Journal of the Asiatic Society of 



Bengal In the analysis of the proceedings of the " Academie des Sciences 



pendant le mois deJuin 1836," there is a letter from M. D. Nervaux, in which 

 he says he had seen a pair of Nightingales (Rossignolj remove their eggs from 

 the nest when this was threatened to be inundated, and that the eggs, placed in 



