1883. ] Recent Literature. 1265 
volume to a detailed statement of the evidence from hybrids, 
from variation, from secondary sexual characters; and this chap- 
ter is illustrated with the excellent figures here reproduced (Plates 
XXIV, xxv), which will speak for themselves. 
In the tenth chapter the author considers the evidence from the 
intellectual differences between men and women; in the next 
chapter the author's theory is considered as supplementary to the 
theory of natural selection, the last chapter being in the way of 
recapitulation and conclusion. 
Now and then the author shows a tendency to take for granted 
matters still in dispute, as, for instance, the nature of the process 
of conjugation, which is, if we understand it, not proved to be of 
the nature of sexual reproduction, though it would seem to be 
such. There are a number of slight but unneccessary typograph- 
ical errors, and a word or two, such as Branchipus, is misspelt. 
TRANSACTIONS OF THE Kansas ACADEMY OF SCIENCE FOR 
s. That no two persons are : 
Course universally acknowledged, and is almost axiomatic, but 
Mr. Galton makes us realize this fact as never be ore. ae 
The book is a collection of scattered essays, published 1 
" Inquiries into Hi ts Development. By Francis GALTON 
uman Faculty and its Devei Big : 
E.R.S. New York, Macmillan & Co., 1883. 87a, pp- 380, with illustrations. 
