INDEX 
Abraxas grossulariata, 39 Dog distemper, 34, 84, 85 
Absorption spectra, 60 Droplet infection, 9, 90 
Aceratagallia sanguinolenta, 22 Duomycin, 89 
Aédes aegypti, 16, 22, 30 
African horse sickness, 88 EGreTs, 16 
Agallia constricta, 22 Enations, 33 i: 
Agalliana ensigera, 22 Equine encephalomyelitis, 23, 26, 30, 56, 
Air-borne infection, 9, 90 88 
Amino acids, §1, $2 Escherichia coli, 48, 68 
Anaphylaxis, 77 Eutettix tenella, 2, 22 
sotr 
ean ae ce sate Fatse blossom (cranberry), 7 
Antibodies, 71 Field immunity, 93 
Antigens, 71 Foot-and-mouth disease, 5, 14, 34, 86, 87 
Arabis (mosaic), 16 Formaldehyde, 59 
Arthropod vectors, 10, 19 Fowl leukaemia, 36 
Aster yellows, 23, 24, 91 Fowl-pest, 6, 36, 86 
Aureomycin, 89 Fowl-pox, 6, 26, 27, 35 
Average pore diameter, 61 
Avian diphtheria, 35 Giesy moth, 47 
Gradocol, 3 
BACTERIAL viruses, 40 Grafting, 7 
purification of, 48 Hey eee ee 
Bacteriophage, 3 Paed pad. io 
Biological control, 88 
Biting insects, 20 
Breast cancer (mice), 8 
Brevicoryne brassicae, 23 
Hashimoto, 2 
Heat treatment (of plants), 94 
Heparin, $3 
Herpes simplex, 88 
CassacE black ringspot, 22 Rye eave 
Carriers (of viruses), 93 
Cauliflower mosaic, 22 
Chemotherapy, 89, 94 
Chloromycetin, 89 
Cicadula sexnotata, 23 
Clover club-leaf, 28 
Common cold, 90 
Complement fixation, 72 
Cross absorption, 76 
Culicidae, 21 
Culicini, 21 
Curly-top (sugar-beet), 2, 25 
Currant moth, 39 
IMMUNITY, 7I 
Inactivation (of viruses), 57 
Infectious myxomatosis, 6 
Infectious papillomatosis, 37 
Influenza (swine), 13, 17 
Influenza virus, 83, 90 
properties of, 55 
purification of, 44 
Inheritance (of viruses), 28 
Inhibition of infectivity, 59 
Insect vectors, measures against, 87, 91 
Intracellular inclusions, 33 
Iwanowsky, 2 
Be al 87 JENNER, 2 
Denaturation, $7 
Dengue fever, 83 LATENT viruses, I7 
Dermacentor andersoni, 29 Leopard frog, 38 
Dermacentor venustus, 88 Local lesions, 33 
Dermanyssus gallinae, 29 Loeffler and Frosch, 2 
d’Herelle, 3 Lovage (mosaic), 16 
Diffusion constant, 61 Lungworm, 13, 17 
Distortion (in plants), 33 Lymantria dispar, 47 
105 
