31 



" Observations on the Blood of Grouse " were discussed by the 

 author in the fourth and last paper. The various blood-cells were 

 described, and the results of blood counts (both of red cells and 

 of leucocytes differentially) of healthy and diseased birds were 

 set forth. Both coccidiosis and strongylosis produce an;emia, and 

 the presence of various parasites is also associated with numerical 

 difierences in the leucocytic elements of the blood. 



Dr. W. A. OuNxixcrroN, F.Z.S., communicated a paper by 

 Prof. G. 0. Sars, C.M.Z.S., containing the lle]x)rt on the Ostra- 

 coda collected by the Third Tanganyika Expedition during 

 1904-1905. 



Dr. A. Smith Woodward, F.R.S., communicated a paper by 

 Dr. R. Broom, D.Sc, O.M.Z.S., "On Tritylodon, and on the 

 Relationships of the Multituberculata." The author had re- 

 examined the type and only known specimen of Tritylodon, and 

 in one or two points came to different conclusions from Owen 

 and Seeley. The large flat piece of bone which forms the ujiper 

 part of the snout, regarded by both Owen and Seeley as the 

 frontal, was believed to be the upper part of the nasal. The sup- 

 posed parietal was held to be the frontal. No distinct prefrontal 

 could be m;ide out ; but there was believed to be a lai'ge distinct 

 septomaxillary. The dental formula was believed to be i^ iii', 

 instead of, as supposed by Owen, i' m^. 



Gidley's recent paper on Ftilodus was criticised at some lengtli, 

 and an endeavour made to controvert his conclusion that Pt'dodus 

 is allied to the Diprotodont Marsupials. 



It was held that while the Multituberculates are doubtless veiy 

 unlike the living degenerate Monotremes, they are more piimitive 

 than the Marsupials and not at all closely allied to them, and 

 that till the evidence of their affinities is much greater than at 

 present they may well be left as an independent oixler. 



The next Meeting of the Society for Scientific Business will 

 be held on Tuesday, the 24th May, 1910, at half -past Eight 

 o'clock P.M., when the following communications will be 

 made ; — 



1. D. G. LiLLiE. B.A. 



Observations on the Anatomy and General Biology of some 

 Members of the largei' Oetacea. 



