88 Walker's Statistical Atlas of the United States. 
of the population by age and sex in each of the States is shown 
by the geometrical method ; the geographical distribution of 
the nang sex, and of the birth-rate is shown y maps. 
The relations of the birth-rate map to various others of the atlas 
are as interesting to the student in physical geography and an- 
thropology as to the political economist. Considered as a whole, 
the newer and agricultural regions very naturally have a 
higher birth-rate than the older and denser population. There 
are several curious areas where a low birth-rate accompanies a 
high relative number of women, as, for example, a belt in 
may be true in the country as a whole, but it is by no means 
universal. While the chief controlling conditions of the birth- 
rate are unquestionably social, some “interesting and curious 
relations to Baebes causes are seen. ‘here is a belt of rather 
memoirs. he Work closes with eight plait eee (by geo- 
metrical methods) the distribution by age, sex, nationality, &c., 
of each of the ‘afflicted classes” (the blind, mute, insane an 
idiotic) for each State and Territory. These (p repared by Mr. 
F. ines) contain methods of illustration which have 
some very desirable features 
Any commendatory notice of this work which did not peas 
of its mechanical execution would be most unjust. When 
consider the intrinsic difficulties of the case, and sfonde 
that it is the first work of the kind yet made in the United 
tes, we must accord high praise to Mr. Julius Bien, who has 
done the lithographic work. 
It is to be hoped that Congress will allow this atlas to be 
pained sed sold at as low a price as the cost of sao pean 
will admit. 
