E. Heron-Allen and A. Earland. 



An Experimental Study of the Foraminiferal Species 

 Verneuilina polystropha (Reuss), and some others, beinj? a 

 Contribution to a Discussion '• On the Origin, Evolution, and 

 Transmission of Bioloafical Characters." 



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. 



Communications intended for the Scientific Meetings should 

 be addressed to 



P. CHALMERy MITCHELL, 



Zoological Society of London, 



Regent's Park, London, jN'.'VV. 8. 



November IWi, 1919. 



