THE INSECT AS MAN’S AUXILIARY. 351 
We do not undertake to write the history of Entomology. A good 
abridgment will be found at the end of M. Th. Lacordaire’s Introduction a 
0 Entomologie. 
NOTE 8.—Book ii., Chap. iv. 
The Insect as Man’s Auxiliary.—The ingenious work which I here con- 
fute, and which, assuredly, cannot be read with gratification, is entitled,—Les 
Insectes, ou Réflexions Pun amateur de la chasse aux petits oiseaux, par E. 
Gand, Lecture faite a ?Académie @ Amiens (26th December 1856). 
A remark which I make a few pages further on, in reference to the neces- 
sity of a popular teaching of natural history, well deserves to gain attention. 
The wealth and morality of the world would be doubled if this teaching could 
be universal. M. Emile Blanchard’s important work, Zoologie Agricole (in 
folio, 1854), gives the very useful history of the principal insects injurious to 
our ordinary or ornamental plants. M. Pouchet, in his excellent Mémoire 
on the Cockchafer, enumerates the principal authors who have described the 
destructive insects. The United States Congress has entrusted to Mr. Harris 
the preparation of a history of them. 
NOTE 9.—Book ii., Chap. v. 
Light and Colour.—My description of tropical climates is borrowed from 
a large number of travellers,—Humboldt, Azara, Auguste, Saint-Hilaire, 
Castelneau, Weddell, Charles Waterton, and others. For Brazil and Guiana, 
