18 FOREST ENTOMOLOGY. 



References to Literature consulted. 



Boas, Dr J. E. V. Text-book of Zoology. English transl. 1896. 

 Cambridge Natural History, The. 1899. 



Carpenter, Geo. H. Insects, their Structure and Life. 1899. 

 Fisher, W. K. Forest Protection : Schlich's Manual of Forestry. 1907. 

 Kaltenbach, J. H. Die Pflanzenfeinde aus der Klasse der Insekten. 1874. 

 Kollar, V. A. Treatise on Insects Injurious to Gardeners, Foresters, and 

 Farmers. 1840. 



Nisbet, John. The Forester. 1905. 



Packard, A. S. Insects Injurious to Forest Trees. U.S.A., 1890. 

 Taschenberg, Dr E. L. Einfiihrung in die Insektenkunde. 1899. 

 Theobald, Fred. V. Insect Life. 1896. 



