Catalpa caterpillar, control of, 169 Caterpillars, 130 control of, 132, 169 Cattle, control of flies on, 111, 118, 136, 155 control of lice on, 157 dips. 111, 155 Central powers, 14 Charles V, 12 Charleston, yellow fever epidemic in, 23 Chipmunks, as reservoirs of plague, 9 Cholera during Crimean War, 13 Chloral hydrate, 31, 40 Chlorobenzene, 31, 40 Chovis, 87 Cimex lectularius, 102 Cinchona, 19 Cincinnati Chemical Works, 39 Citrus fruits, control of insects on, 165 Civil War, malaria victims during, 16 Cleanliness, role of, in typhus control, 11 Qement VII, 12 Clothes, protection of, against moths, 132, 158 Cockroaches, control of, 85, 152 Colorado potato beetle, control of, 33, 129. 168 Commercial Standard CS72-38, 72 Constance, plague epidemic in, 6 Constantinople, plague epidemic in, 5 Contact poisons, 62 Corn, control of insects on, 166 Corn borers, control of, 166 Cotton, control of insects on, 166 Crab lice, control of, 101, 156 Craft, Willis, 78 Crimean War, 13 Crops, agricultural, magnitude of destruction by insects, 3 control of insects on, 129, 163 Crusaders, 16 Cuba, 23, 24 yellow fever epidemic in, 23 Culex, 112 Culicidae, 112 Culicinae, 112 Dalmatia, plague epidemic in, 5 Danger in use of DDT, 47 DDT, aerosols, 68, 80, 154 agriculmral dusts, 69, 88, 165 composition of, 40 dips, for control of flies on cattle, 111, 155 discovery of, 30