135 
The following gentlemen were elected Officers for the 
ensuing session 1882-1883. 
J. COSMO MELVILL, M.A., F.L.S. 
A. BROTHERS, F.R.A.S. 
R. D. DARBISHIRE, F.G.S. 
JOSEPH BAXENDELL, F.R.A.S. 
®«twn«r. 
MARK STIRRUP, F.G.S. 
Jmntarg. 
ROBT. E. CUNLIFFE. 
Ccwtuil. 
THOS. ALCOCK, M.D. 
CHAS. BAILEY, F.L.S. 
JOHN BOYD. 
HASTINGS C. DENT. 
MARCUS M. HARTOG, B.Sc., F.L S. 
A. MILNES MARSHALL, F.L.S. 
THOS. ROGERS. 
W. C. WILLIAMSON, F.R.S. 
Mr. Boyd remarked upon the discovery of the egg cases 
of Pediculis Capitis in the crevices in an African Chief’s 
head stool in the possession of a friend of his. 
Mr. Plant stated that he had endeavoured to obtain 
larger specimens of the Dreissena noted at the last meeting, 
but without success. 
Dr. Alcock concluded his notes on Frog Tadpoles by 
describing the three remaining periods into which their life- 
history may be divided. 
The third period extends from the thirtieth to the fiftieth 
day, and appears to be devoted entirely to growth, no new 
developments being observed. The tadpoles swim actively, 
