Elephantiasis, 164.

Enemies of mosquitoes, 97.

Enteritis, 69.

Euglena, 21.

Eye-worm, 12.

Face-mite, 35.

Fighting mosquitoes,
adults, 101;
larvae, 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.

Haemamoeba, 109.

Haematobia, 45.

Haemosporidiida, 24.

Haemotopinus 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.

Insects,
cause or carry disease, 40;
numbers, 40;
annual loss caused by, 41;
how they carry disease germs, 55.

Irrigating ditches, 104.

Itch-mite, 36.

Jackson, Dr. D.D., 67.

Jennings, 22.

Jiggers, 38, 53.

Jigger-flea, 53.

Kala-azar, 173.

Kerosene, 104.

Koch, 44.

Laemopsylla cheopus, 153.

Lamprey-eel, 2.

Lancisi, J.M., 107.

Larvae,
of flies, 64;
of mosquitoes, 78.

Laveran, A., 108.

Laverania, 109.

Lazear, Dr. Jessie W., 123.

Leeuwenhoek, Anton von, 22.

Lepra bacillus, 36.

Leprosy, 36, 70, 171.

Lice, 54.

Linnaeus, 76.

Little house-fly, 49.

Lock-jaw, 18.

Low, Dr. A., 118.

Lucilia spp., 48.

Lugger, Prof. Otto, 38.

Malaria,
early theories in regard to, 106;
parasite that causes, 108;
life history of parasite, 109;
parasite in mosquito, 113;
summary, 117;
experiments, 118.

Maggots, 63.

Malta or Mediterranean feve