305 



ADDITIONS TO THE LIBRARY BY PURCHASE. 



Annales de Chimie et de Physique. Troisieme Serie. Tome XVIII. 



Novembre, 1846. 8vo. 

 Comptes Rendus Hebdomadal res des Seances de I'Academie des 



Sciences. Par MM. les Secretaires Perpetuels. Tome XXIII. 



Nos. 13, 14, 16, 17, 18. 4to. 

 The London, Edinburgh, and Dublin Philosophical Magazine, and 



Journal of Science, Third Series. December, 1846. Nos. 196 



and 197. Sup. 8vo. 

 Astronomische Nachrichten. Nos. 578, 582, 583. 4to. 



The Committee (Drs. Horner, Goddard, and Dunglison) to 

 whom was referred the communication of Dr. Meigs, on the 

 Corpus Luteum, reported in favour of its publication, which 

 was ordered accordingly. 



Upon carefully examining a portion of fresh vitellus ovi in the mi- 

 croscope, numerous corpuscles, granules, punctiform bodies, and par- 

 ticles of oil, are seen swimming in a transparent liquid. 



Upon placing a portion of fresh corpus luteum of the cow on the 

 compressorium, and turning the screw, there escapes from the crushed 

 mass a quantity of corpuscles, granules, punctiform bodies, and oil 

 globules, swimming in a transparent liquid. 



The appearances are so similar in the two observations, that it is 

 scarcely possible to discover any difference, save that occasioned by 

 portions of tissue, which are the detritus of the crushed mass of corpus 

 luteum. 



The corpuscles, whether those seen in the yelk, or those observed 

 in the crushed corpus luteum, are equally transparent, and transmit 

 a yellow light. 



On crushing a bit of corpus luteum, there escapes much granular 

 matter accurately resembling that of the granular membrane of the 

 graafian follicle. This, even where great care was taken to select 

 the portion from near the exterior superficies of a large corpus lu- 

 teum, avoiding to take any from the inner surface of the crypta. 

 This similarity suggests an identity in the nature and origin of the 

 granules. 



Dr. M. believes the colouring matter, and the chief constituent bulk 

 of a corpus luteum, to be true vilellary matter, deposited outside of the 

 inner membrane (ovisac) of a graafian vesicle. 



