gregarin;k. 
ProL 13 
the pbeiioinena of Impregnation among Animals, P, Bost. Soc, xix. 
p. 165. 
Concludes that total yelk -segmentation is universal, as also a real 
alternation of generations. 
Strasburger, E. Ueber Befruchtung und Zell-theilung. Jen. Z. Nat. 
xi. p. 435, pis. xxvii.-xxxv. 
A largely illustrated treatise, seeking to explain the general phenomena 
of fertilization by circumstances occurring in animal and vegetable 
cells. 
The development of the forms of animal life is discussed at some 
length, with especial reference to modern discoveries and theories, in the 
inaugural address of Prof. Allen Thomson, Brit. Ass. 1877, reported in 
Nature, xvi. pp. 302-311. 
