AGRICULTURE 
632.6 Injurious animals 
Divided like 590, but clas injurious insects in 632.7 insted of 632.657 
[njurious insects 
Divided like 505.7. See also 632.9 
Thysanura, etc. 
Bristle tails or silver fish, spring tails 
Orthoptera 
Grasshoppers, locusts, roaches, earwigs, leaf insects. See also 632.73 for 
leaf hoppers 
Pseudoneuroptera 
Dragon flies, thrips 
Neuroptera 
Lacewing flies, caddis flies 
Rhynchota, hemiptera 
Afids (plant lice), biting lice, cicads, gras flies, scale insects, chinch bug, 
squash bug, mealy bug, leaf hoppers. See also 632.72 for other leaf insects 
Coleoptera 
Beetles, flat-hed and round-hed borers, weevils, wire worms 
Diptera 
Flies, mosquitos, gnats, midges, fleas, root maggots, army worm, Hessian 
fly 
Lepidoptera 
Butterflies, moths, caterpillars 
Hymenoptera 
Ants, bees, wasps; saw, gall, and ichneumon flies 
Diseases and injuries 
Other than coverd by 632.2-.7 
Means of protection 
Other than coverd by 632.1; e. g. netting and covers, screens. gards, scarecrows 
Plant quarantine 
Methods and apparatus 
Spraying, dusting, fumigating 
Preparations and materials 
Works dealing with 2 of the subjects, Insecticides, Fungicides and Anti- 
septics, ar clast here, but works dealing with Insecticides alone ar preferably 
clast under 632.7 and its subdivisions, with Fungicides alone under 632. 4 
and its subdivisions 
Insecticides 
Fungicides 
Antiseptics 
Natural enemies of pests 
May be subdivided like soo