
318 REVIEWS. 
injury done in the mass by one or two insects. To give one example in 
illustration, from among the fifty-seven plates contained in the two vol- 
umes, plates five and six contain twenty-one gures, showing the injury 
different de aie of injury, with transverse sections of the twigs, and 
microscopic sections illustrating the pathological iT: of the tree; 
all the points mer illustrated in the figures and discussed in the text 
with a minuteness and care that are almost incredible for one man to have 
accomplished. 
We would speak most Veri iur d of the work, because we have 
not often been so impressed by t an, W. 
already published so much. It will give a new impetus to economical 
SRI and we hope the work will meet with a wide circulation in 
this country, where the same injuries are produced by analogous insects, 
and perhaps greater losses are sustained from the attacks of insects than 
even in Europe. Such a work on fruit trees, field and garden vegetables, 
is now demanded, before the whole subject of economical entomology W will 
have been Mon. discussed. 
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HAND-BOOK OF ECONOMIC ZOÖLOGY FOR AGRICULTURISTS.*— Another 
book, by the same author, for still more general circulation, E as its title 
runs, **the forest-destroyers and their enemies, or a description and illus- 
tration of injurious forest insects and aritetide generally Pur to 
forests, with advice as to the means of their extermination, and for r the 
protection of their enemies. A hand-book for pÈ pe a ete.” 
It is perhaps the most comprehensive work on economic zoólogy ye t pub- 
lished, and a perfect treasury of information regarding all the varied re- 
lations of animals (especially insects) destructive to forests. 
RECORD OF AMERICAN ENTOMOLOGY FOR 1868. +—After unforseen de- 
lays this long promised E has appeared, and we trust that ento- 
mologists will feel inclined to purchase a copy, if for no other reason 
diat to aid in the establishment of a yearly record of their labors, which 
cannot fail to develop new students of entomology, and stimulate e those 
already at work. The Editor has been assisted by Mr. S. H. Scudder, 
Baron Osten Sacken, Dr. J. L. Leconte, Mr. P. R. Uhler and Dr. H 
Hagen. The present “ Record” contain ni: with two exceptions, no Tê- 
, a8 copies 

as relate to American insects, to the Editor, Dr. A. S. Packard, Salem» — 

"raph lates wood cath d het calendar, i cu 8vo, Berlin, 1869, $4.00 gold. 
_1Salem, Naturalist's Book Book Agency. 8vo, pp. 60. Price $1.00. 

and improved. With seven colored and plain copper plates, litho- 
TOC. E be EM 

