Anthrax, 44; and flies, 70. Arthropoda, 26. Asexual reproduction, 111. Bacillus, anthracis, 44; icteroides, 124; lepræ, 171; pestis, 150. Bacillus carriers, 66. Back-swimmers, 100. Bacteria, 15; saprophytic and parasitic, 17; effect on host, 18; dissemination, 18. Bedbugs, 54, 147. Banks, Nathan, 34. Bell-animalcule, 22. Berne, 51. Birds as enemies of mosquitoes, 99. Black-flies, 46. Blackheads, 35. Blow-flies, 48. Blue, Dr. Rupert, 143. Blue-bottle flies, 48. Bot-flies, 50. Break-bone fever, 169. Breeze-fly, 44. Buffalo-gnats, 46. Calliphora vomitoria, 48. Camphor, for mosquitoes, 102. Cancer, 36. Carroll, Dr. James, 123. Castor-bean tick, 27. Cattle tick, 29. Cedar oil, for mosquitoes, 102. Ceratophyllus, faciatus, 153; acutus, 156. Cesspools, 72. Chigger, 53. Chigger-flea, 53. Chigo, 30, 39. Chigoe, 53. Cholera, 68. Chrysomyia macellaria, 47. Cimex, lectularis, 54; rotundatus, 173. Contagious diseases, 8. Conjugation, 20. Cooley, Prof. R.A., 33. Craig, Dr. C.F., 118. Ctenocephalus, canis, 154; felis, 154. Culex, fatigans, 96, 170; pipiens, 98. Dengue, 169. Dermatobia cyaniventris, 51. Dermatophilus penetrans, 53. Diarrhea, 69. Diptera, 43. Diving beetles, 100. Dragon-flies, 99. Dysentery, 20. Eggs, of flies, 63; of mosquitoes, 77; of Anopheles, 92. Egyptian opthalmia, 52. Elephantiasis, 164. Enemies of mosquitoes, 97. Enteritis, 69. Euglena, 21. Eye-worm, 12. Face-mite, 35. Fighting mosquitoes, adults, 101; larvæ, 103. Fiji Islands, Anopheles in, 117. Filaria bancrofti, 164. Finlay, Dr. Charles, 124. Fish, 100. Flagella, 20. Fleas, 52; and plague, 142, 145, 147; structure and habits, 151; common species, 153; on ground squirrels, 156; remedies for, 157. Flies, 43; and typhoid, 65; specks, 66; and various diseases, 68. Flesh-flies, 48. Fumigating for mosquitoes, 102. Gad-fly, 43. Glossina palpalis, 163. Golgi, Camillo, 109. Grassi, Prof. G.B., 118. Gray-flies, 47. Ground squirrels and plague, 155. Guinea-worm, 11. Hæmamoeba, 109. Hæmatobia, 45. Hæmosporidiida, 24. Hæmotopinus spinulosus, 55. Harvest-mite, 37. Havana, yellow fever in, 131. Hawaii, mosquitoes in, 98. Hemiptera, 54. Homalomyia canicularis, 49. Hoplopsyllus anomalus, 156. Horse bot-flies, 50. House-flies, 57; structure, 59; how they carry bacteria, 62; life-history and habits, 63; fighting, 71; and typhoid, 65. Horse-flies, 43. Howard, Dr. L.O., 59, 73. Hyperparasitism, 3. Immunity, 5. Indian Plague Commission, 144. Infectious diseases, 8. Infusoria, 22.