398 



ON INCREASE IN SIZE 



[PT. Ill 



where A is 3. characteristic constant, was used by Faure-Fremiet in 

 1922 for describing the growth of a Vorticella colony, but the con- 



100 



CHICK 



Hasselbalch 1900 

 O Series (a) 

 D « (h) 



Bohr& Hasselbalch 1900 

 • LamsonS^Edmond 1914 



Ijin 1917 

 O LeBrebon8(Schaeffer1923 

 B Murray 1926 



Schmalhausen 1926 

 ^ Needham 1927 



RAT 



Stobsenberg 1915 



MOUSE 

 ® McDowell etc. 1927 

 <§> LeBreton&Schaeffer1923 



GUINEA-PIG 

 O Draper 1920 



SHEEP 

 ® Colin 1888 



PIG 

 O LeBrebon&.Scliaeffer1923 

 O Warwick 1928 



TROUT 

 X Scheminski 1922 



RABBIT 

 O Chaine 1911 

 « Lochhead&,Cramer1908 



0-0 



1 00 days 



Fig. 41. 



ditions there are too far removed from those of embryonic develop- 

 ment to make it worth while considering this aspect of the subject 

 in detail. The formula proposed by Faure-Fremiet for the growth 



