BOOK-NOTES, NEWS, ETC. 435 
the life-history of plants, such as germination, juvenile stages, 
a 
leaf-fall, and resting periods natural or induce nd on the 
and phylogenesis. The book as a whole forms a useful modern — 
text-book of botany, well arranged and well illustrated. 
B. R. 
———— 
Elemente der Eaakten Erblichkettslehre. By W. JOHANNSEN. 
Pp. 516, 31 figures in text. Jena: Fischer. 1909. 
contains a Vv. mount of information respecting the statistical 
nd mathematical investigations which have been so far made in 
respect of the on of inheritance. Th ent reviewer 
h 
in accumulating the store of information gathered therein for the 
use of workers in these fields. 
BOOK-NOTES, NEWS, de. 
