No. 233. 



ABSTRACT OF THE PROCEEDINGS 



OF THE 



ZOOLOGICAL SOCIETY OF LONDON* 



Novemljer 7th, 1922. 



Prof. E. W. MacBride, F.R.S., Vice-President, 

 in the Chair. 



Prof. G. Elliot Smith, M.D., F.R.S., F.Z.S., exhibited, and 

 made remarks upon, a series of photographs of a fossil tooth 

 [Hesperojnthecus) from Nebraska. 



Dr. A. Smith Wooi>ward, F.R.S., F.Z.S., exhibited, and made 

 remarks upon, drawings and photographs comparing teeth of a 

 Bear, Chimpanzee, and Hesperopitlipxits. 



Mr. C. S. Elton communicated his paper " On the Colours 

 of Water-Mites." 



Prof. E. B. PouLTON, M.A., F.R.S., F.Z.S., gave an account, 

 illustrated with lantern-slides, of a series of experiments con- 

 ducted at the Laboratory of the Marine Biological Association, 

 Plymouth, in 1890, demonstrating that Commensalism may be 

 beneficial to Crustacea. 



Dr. G. M. Ybvers, M.R.C.S., L.R.C.P., F.Z.S., gave a resume 

 of his paper on- " Nematode Parasites of Mammals from the 

 Zoological Society." 



* This Abstract is published by the Society at its offices, Zoological Gardens', 

 Eegenfs Park, N.W., ou the Tuesday following tJie date of Meeting to which 

 it refers. It will be issued, along with the ' Proceedings,' free of extra charge^ 

 to all Fellows who subscribe to the Publications ; but it may be obtained on the 

 day of publication at the price of Sixpence, or, if desired, sent post-free for 

 the sum of Six ShiUinc/R per annum, payable in advance. 



