388 The Botanical Gazette. [September, 
qualities and powers from the parent to the offspring, both in 
vegetative and sexual reproduction. It is a curious fact, to 
which Vines has recently called attention, that even vegetative 
reproduction, as in the case of the growth of a plant from a 
cutting, brings about rejuvenescence of the protoplasm, the 
new individual showing the characters of youth, and not of 
maturity. In both sexual and asexual reproduction the at- 
tention should be focused chiefly upon the behavior of the 
cell, and a wonderful complexity will be found in these minute 
structures. The mystery of a world is bound up in this bit of 
protoplasm, and corresponding tothe multum in parvo aggre- 
gation of properties there seems to be an unsolved intricacy 
of structure. By the study of what was originally supposed 
to be essentially homogeneous protoplasm, we have gradually 
distributed and extended the properties of the cell to the 
cytoplasm, the plastids, the nucleus, the nucleoli, the fibrillar 
that it grows and propagates itself, that it moves and reacts 
against stimuli,” and therefore he urged that far more atten- 
tion should be given to this department of physiology, 45 
the key to many complicated processes. The physiological 
