ILLUSTRATIONS
Rennie Wilbur Doane
An artificial lake, nearly dry and partly
filled with rubbish, has become a breeding-ground
for dangerous mosquitoes
Frontispiece
PAGE
Fig. 1.
A lamprey
2
Fig. 2.
Sacculina
2
Fig. 3.
Trichina spiralis
2
Fig. 4.
An external parasite, a bird-louse
(
Lipeurus ferox
)
3
Fig. 5.
An internal parasite, a tachina fly
(
Blepharipeza adusta
)
3
Fig. 6.
Work of an internal parasite, puss-moth larva parasitized by a small ichneumon fly
3
Fig. 7.
Typhoid fever bacilli
20
Fig. 8.
Amoeba
20
Fig. 9.
Euglina virdis
21
Fig. 10.
Spirocheta duttoni
21
Fig. 11.
Paramoecium
22
Fig. 12.
Vorticella
22
Fig. 13.
Pathogenic protozoa; a group of intestinal parasites
22
Fig. 14.
Castor-bean tick
(
Ixodes ricinus
)
28
Fig. 15.
Texas fever tick
28
Fig. 16.
Texas fever tick
(
Margaropus annulatus
)
29
Fig. 17.
Amblyomma variegatum
29
Fig. 18.
Ornithodoros moubata
36
Fig. 19.
The follicle mite
(
Demodex folliculorum
)
36
Fig. 20.
Itch-mite
(
Sarcoptes scabiei
)
37
Fig. 21.
Harvest-mites or "jiggers"
37
Fig. 22.
Horse-fly
(
Tabanus punctifer
)
44
Fig. 23.
Stable-fly
(
Stomoxys calcitrans
)
44
Fig. 24.
A black-fly
(
Simulium sp.
)
45
Fig. 25.
Screw-worm fly
(
Chrysomyia macellaria
)
45
Fig. 26.
Blow-fly
(
Calliphora vomitoria
)
45
Fig. 27.
Blue-bottle fly
(
Lucilia sericata
)
50
Fig. 28.
Flesh-fly
(
Sarcophaga sp.
)
50
Fig. 29.
"The little house-fly
" (
Homalomyia canicularis
)
51
Fig. 30.
153
Fig. 109.
Human-flea
(
P. irritans
);
FEMALE
156
Fig. 110.
Mouse-flea
(
Ctenopsyllus musculi
);
FEMALE
156
Fig. 111.
Trypanosoma gambiense
164
Fig. 112.
Tsetse-fly
164
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