282 Prof. E. A. Schafer. Immature Ovarian Ovum. [Jan. 6 r 



hyoid cartilage (or bone) usually, but not always in direct contact 

 with, that structure. They are placed either between the hyoid carti- 

 lage and the hyoglossus muscles, or else immediately to the outer side 

 of the latter, just anterior to the point of their convergence. Their 

 structure is similar to that of other thyroid glands. The paper 

 is accompanied by eighteen uncoloured and two coloured drawings r 

 illustrating the subjects described. 



II. "Note to the Paper on the Structure of the Immature 

 Ovarian Ovum in the Common Fowl and in the Rabbit." 

 By E. A. Schafer, F.R.S. Received November 24, 1880. 



Attention was drawn in the above mentioned paper (" Proc. Roy. 

 Soc." vol. 30, p. 239, and fig. 9) to certain peculiar bodies (pseudo- 

 nuclei) in the vitellus of some immature ovarian ova of the bird, the 

 origin and interpretation of which were left in doubt. In a paper by 

 Rauber,* which I had not seen at the time, the bodies in question are- 

 specially noticed, and an account of them is given which agrees closely 

 with mine. I confess, however, I should be slow to acquiesce in the- 

 opinion (which Rauber seems disposed to adopt) that they are either 

 directly or indirectly products of immigrated white blood-corpuscles. 

 So far as I can see they appear to be nothing else than condensations 

 of vitelline substance. 



I would further take this opportunity "of mentioning that the con- 

 voluted tube delineated in fig. 35 of the paper referred to in the 

 heading of this note is not to be supposed to represent any part of an 

 egg-tube, but the remains of a tubule derived from the Wolffian body. 

 It is inserted to show the distinction between the two kinds of tubes 

 which may be met with at the same time in the ovary. 



III. " Note on a Communication made to the Royal Society by- 

 Professor Roscoe, LL.D., F.R.S., ' On the Absence of Po- 

 tassium in Protagon prepared by Dr. Gamgee.' " By J. L. 

 W. Thudichum, M.D., F.R.C.P. Lond. Communicated by 

 John Simon, C.B., D.C.L., LL.D., V.P.R.S. Received No- 

 vember 25, 1880. 



With reference to a communication which Professor Roscoe has 

 recently made to the Royal Society on the subject of " Protagon " 



* A. Rauber, " Ueber den TJrsprung der Milch und die Ernahrung der Frucht im 

 Allgemeinen." Leipzig, 1879. 



