REVIEWS. 419 
hensile power and becoming foliacious, would. no longer 
be called a tendril. In this last stage (that of the existing 
L. nissolia), the former tendril would reassume its original 
function of a leaf, and its lately largely developed. stipules 
being no longer wanted would decrease in size." He be- 
litros that the capacity of acquiring the revolving power on 
which most climbers depend is inherent, though undevel- 
oped, in almost every plant in the vegetable kingdom. 
Notwithstanding his peculiar views, which are so enticing to 
many, we must kan leds that he is a shrewd and accurate 
observer, and that in this paper, as in many others, he has 
patiently collected a vast amount of valuable information 
upon a great variety of subjects. 
REVIEWS. 
RAL SELECTION.* — Mr. Wallace has here brought together, ina 
the mad of the reader, which the ous style of treating the different 
subjects greatly strengthens. In fa e have rarely read a wore which 
has given us so much’ pleasure and i iiia and we recommend it to 
all those who desire to get the principles of Darwinism but have not the 
patience to spend a longer time over Darwin's work. 
The first chapter shows that geological changes determine the varia- 
tions which take place in the geographical distribution of animals and 
plants; that closely allied animals are closely associated geographically 
and geologically, so that * every species has come into existence coinci- 
bo 
reversions of domesticated types when returned to a feral condition. A 
domesticated type, when allowed to become wild again, generally speak- 
*Contributions to the Theory of Natural Selection. A Series of Essays by Alfred Russell 
Wallace, McMillan & Co., London and New York, 8vo, p. 384, 
