Bibliographical Notices. 53 



and in regard to the primitive formation of the*e cellules it is re- 

 marked, — " 1°, chaque cellule nait isolement ; 2°, chaque cellule se 

 forme autour d'un centre donne." 



Chap. XIII. Systeme ge'ntrale de la formation embryonique. 



Chap. XIV. Apercu historique de la marche du de'veloppement. — 

 This details the appearance and condition of the ovum and embryo 

 from the time of the expulsion of the former from the fish to the 

 exclusion of the embryo, through a period of from forty to sixty days. 

 As we previously observed, the whole work will be of much import- 

 ance to embryologists ; and we would only make the suggestion, that 

 as the ova experimented on, and the young fish after exclusion, (in 

 which state they could not be kept beyond a month alive,) were often 

 in a condition rather unhealthy, — could M. Vogt depend on the pro- 

 gress and development continuing to their greatest extent ? 



The plates of the atlas are beautifully and minutely lithographed. 



Narrative of a Residence on the Mosquito Shore, during the years 1839, 

 1840, 1841. By Thomas Young. 8vo. London, 1842. Smith, 

 Elder, and Co. 



Although this little volume, written by the Deputy-Superintendent 

 of the British Central American Land Company's settlements on the 

 Mosquito Shore, only pretends to being considered as a " sort of 

 hand-book " for settlers in that promising district of the New World, 

 it appears to us to be highly deserving of the attention of the natu- 

 ralist. The author is manifestly one of those who never visit any 

 country without having their "eyes open" to whatever they may 

 meet with, and accordingly without being a professed naturalist, or 

 apparently knowing anything of scientific natural history, he has 

 filled his book with interesting observations upon the native produc- 

 tions of the land in which his lot was temporarily cast. His account 

 of the native tribes cannot fail highly to interest those who study the 

 natural history of man, and his observations upon the animals and 

 vegetables are full of facts deserving of the attention of the man of 

 science. It is certainly most unfortunate that a person so well qua- 

 lified for scientific observations should not have that acquaintance 

 with science which would enable him to refer his facts to their re- 

 spective species, so as to make them available for the use of the home 

 naturalist. As, however, he has given the native names, a person 

 on the spot would probably find little difficulty in determining the 

 species. We have no room for extracts, but one statement has struck 

 us as so interesting, and so similar in some respects to a disputed 

 observation of Audubon upon the pigeon of the United States, that 

 we must make room for it : — 



" The large flights of green parrots and yellow- tails, in the Black 

 river, will hardly be credited ; flight after flight passing over our 

 heads, and settling just at sunset on some tall spreading trees ; in- 

 deed on one occasion such quantities alighted on a tree at the back 

 of our encampment that a large branch broke off, and the noise that 

 ensued was laughable ; such callings, scoldings, and screamings, I 

 never heard before." — Page 100. 



