10 



The next Meeting of the Society for Scientific Business will 

 be held on Tuesday, April 29th, 1919, at 5.30 p.m., when the 

 following communications will be made : — 



Dr. W. T. Calman, D.Sc, F.Z.S. 



Exhibition of Marine Boring Animals. 



Noel Taylee, B.Sc. 



A unique Case of Asymmetrical Duplicity in the Chick. 



The following communication will be taken on 

 May 13th, 1919. Lt.-Col. S. Monckton Copeman, F.R.S., F.Z.S. 



Experiments on Sex Determination (illustrated by lantern- 

 slides). 



The following Papers have been received : — 

 Geo. Jennison, Esq. 



" A Chimpanzee in the Open Air in England." 



Claude Morley, Esq., F.Z.S. 



Equatorial and Other Species and Genera of African 

 Ichneumonidje. 



The Publication Committee desire to call the attention of 

 those who propose to offer Papers to the Society, to the great 

 increase in the cost of paper and printing. This will render it 

 necessary for the present that papers should be condensed, and 

 be limited so far as possible to the description of new results. 



Comnuinications intended for the Scientific Meetings should 

 be addressed to 



P. CHALMERS MITCHELL, 



Secretary. 

 ZooLouicAL Society of London, 

 Regent's Park, London, N.W. 8. 

 April 15th, 1919. 



