KIRBY AND SPENCE’S ENTOMOLOGY. 
SIXTH THOUSAND OF THE SEVENTH AND CHEAPEE EDITION. 
Just published, in One closely-printed Volume of 600 pages, crown Zvo. price 5s, cloth, 
INTRODUCTION 
TO 
ENTOMOLOGY; 
OR, 
ELEMENTS 0E THE NATURAL HISTORY 0E INSECTS: 
COMPRISING AN ACCOUNT OF NOXIOUS AND USEFUL INSECTS 5 
OF THEIE METAMOEPHOSES, FOOD, STRATAGEMS, 
SOCIETIES, MOTIONS, HYBEENATION, 
INSTINCT, ETC. 
By WILLIAM KIRBY, M.A., F.R.S., F.L.S. 
Rector of Barham j 
AND 
* WILLIAM SPENCE, Esq., E.R.S., E.L.S. 
Seventh Edition (sixth thousand), with an Appendix relative to the Origin 
and Progress of the Work. 
Advertisement to the Seventh Edition. 
This work is now published at one-sixth of the price of the Sixth 
Edition, so as to bring it within reach of all desirous of becoming 
acquainted with the Natural History of Insects, and thus carrying 
out more effectually the object of the Authors—that of introducing 
others to a branch of science which they had found so delightful. 
Though compressed by a smaller type into One Volume, it contains 
every line of the Sixth Edition, which includes much new matter 
not in the five preceding editions; and, to render the work more 
complete, the account of its origin and progress, furnished by 
Mr. Spence to the “ Life ” of Mr. Kirby by Mr. Freeman, is, 
with his permission, given as an Appendix. 
Opinions of tlie Press. 
“ No work in the English language, we believe, has done more than 
Kirby and Spence’s learned and popular Introduction to spread the taste 
for Natural History at home, and to extend for it the sphere of observation, 
from the more conspicuous but limited field which the Yertebrata afford, to 
the countless species and more varied history, transformations, and instincts 
London: LONGMAN, BROWN, and CO., Paternoster Row. 
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