A R T IC LE V I. 



On the Corpus Luteum. By Ch. D. Meigs\ M.J)., Mem. \m. Phil. Soc., Prof, of Mid. and 

 Diseases of Women and Children in Jefferson Med. Coll. Read January 15///, IS 17. 



On the ISth of December, 1846, 1 made a verbal communication to the Society, setting 

 forth certain opinions I had formed as to a vitellary nature of the Corpus Lutcum. 



I now propose to lay before the Society, in a more formal manner, and in larger detail, 

 the proofs, as I suppose them to be, of my proposition, with certain arguments, to show 

 how a reasoning upon the subject tends to confirm the opinions derived from observation. 

 I request that the present communication may be considered as a repetition and enlarge- 

 ment of the statements I have already made here, on the subject in question. 



Since the date referred to I have carefully made researches both with my Chevallier's 

 microscope and by Other methods, as to the comparative appearances of vitellary matter 

 taken from the egg, and matter procured from fresh Corpora Lutca. 



These renewed researches leave me very fully convinced that the yelk of eggs and the 

 yellow matter found in a corpus lutcum, are of the same apparent structure, form, colour, 

 odour, coagulability, and refractive power. 



Having placed a small quantity of yelk on the platine, and just before I have brought 

 the object into the focus I have been struck with the appearance of the transmitted lighl ; 

 I bright-yellow, which fills the whole tube of the instrument. 



When I have, in like manner, placed a bit of fresh corpus lutcum, of the cow or sheep, 

 on the compressor, and have crushed it, by turning the screw, I have found the tube filled 

 with the same tinted light, before obtaining the focus. 



A portion of yelk placid beneath the objective, exhibits numerous granules, corpuscles 

 containing a yellow fluid, and oil-globules, mixed with a quantity of punctiform bodies. 



I pon turning the Bcrew of the compressor on a -mall lump of corpus luteum, carefully 

 dissected out from its indusium, there is seen to escape from the crushed mass a quantity of 

 granules, corpuscles filled with yellow fluid, oil-globules, and punctiform bodies Bwimraing 



in a prllurid liquor. 



