214 
THE PLANT WORLD. 
time available in a compact volume. The typographic achievement is the 
more marked when we consider that each of the 630 species described is 
illustrated by a more or less elaborate line engraving. Much of the space 
thus occupied might however, we regret to say, have been put to much 
better use. We cannot convince ourselves that the many drawings of e. g. 
the supposed numerous species of Crataegus, will be of any more use than 
to break up the monotony of octavo pages of small type. Certainly they 
will not help the novice, and will as certainly be ignored by others. 
The treatment appears to the reviewer rather uneven. The genus 
Cretaegus has been a matter of much difference of opinion as regards the 
number of species it may contain, and at this time in the development of 
taxonomy, it ill behooves one to take any but a position of stolid skepticism. 
But we feel very safe in saying that if Crataegus has 132 species, the genus 
Acer certainly has more than nine, a genus which moreover has far more 
than its share of varieties. This, however, is as much as to say that our 
present day taxonomy is but a step to a more exact science of the future, 
the goal of which we may now see but dimly if at all. , 
Concerning the cacti, which the author, in part, includes, we may very 
well ask if they are trees at all. On the author’s supposition, there are 
several, if not many, more, than are accredited as trees. As to their 
common names we would take exception to “ Suwarro,” since the 
spelling is not in accord with the pronunciation, which, indeed, is difficult 
for the English vocal apparatus. But since “ Cholla ” is not spelled adap¬ 
tively in this regard, why should “ Suwarro ” be so treated ? , , 
Professor Sargent has, however, done a large piece of work, and his 
manual will, no doubt, be of much value to students especially to foresters 
and those interested in trees in particular. The analytical key at the 
beginning of the work is based upon leaf characters. The publishers are 
to be congratulated on the appearance and compass of a book containing 
such a very large content. 
The Book of Garden Design. By Charles Thonger. i2mo. Pp. viii — 
87. Illustrated. London and New York: John Lane, The Bodley Head. 
This book, in contrast to many treating of outdoor subjects, may well 
be regarded as a scholarly treatment of a subject which would in the ordi¬ 
nary scarcely receive such. There is much in it to stimulate the applica¬ 
tion of thought to gardening, and in a land where very few people do 
more than raise “ garden sass,” where few bestow that intimate attention 
to their own bit of ground of which we see so much in many other 
countries, such books as these are worthy of reading and study. 
A Primer of Forestry. Part II. Practical Forestry. By Gifford Pin- 
chot. i2mo. Pp. 88. Washington: Government Printing Office. 1905. 
An excellently illustrated and useful manual which will prove especially 
valuable to teachers who desire to introduce practical forestry into the 
school, while of use to those who own or are interested in forests from 
any point of view. 
