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abdomen adult anal animals antennae apex apical Argasidae arista arthropods attack beak bed-bugs bite blood body breeding bristles bugs carriers cattle cause cell cephalothorax chitinous claws coxae crossvein Culex deposited developed disease dorsal eggs elongate evidence experimental experiments eyes feeding female fleas flies forms fumigation genera genus glands habits hairs head hemelytra Hemiptera hind host house-fly Howard inoculation insects intestinal itching known large number larvae legs less lice louse macrochaetae malaria male mandibles manure margin mites monkeys mosquitoes Nuttall nymphs occur Ocelli organism pair palpi parasite pathogenic patient pellagra pest Phlebotomus plague plumose poison posterior present proboscis produced pronotum rats relapsing fever reported salivary sclerite scutellum segment setae Simulium skin slender species spiders spines spirochaetes spread stage sternopleurals sting Stomoxys sucking thorax tibia tick tion transmission transmitted trypanosomes tubercles United usually various vein ventral widely distributed wing yellow fever
Page 200 - Acquaintances and friends avoided each other in the streets, and only signified their regard by a cold nod. The old custom of shaking hands fell into such general disuse, that many shrunk back with affright at even the offer of the hand.
Page 322 - In this case the bag may be lowered from the outside after the operator has left the room and closed the door. The writer has most often started the fumigation toward evening and left it going all night, opening the rooms in the morning. The work can be done, however, at any time during the day and should extend over a period of five or six hours at least. It is said that better results will be obtained in a temperature of 70° P., or above, than at a lower degree.
Page 207 - Fever," written in 1853. Forty-seven years later it has been permitted to me and my assistants to lift the impenetrable veil that has surrounded...
Page 226 - It was believed that the tick obtained the parasite from the blood of its host and in its dissolution on the pasture a certain resistant spore form was set free, which produced the disease when taken in with the food.
Page 205 - Bacillus icteroides (Sanarelli) stands in no causative relation to yellow fever, but when present should be considered as a secondary invader in this disease. From the second part of their study of yellow fever they draw the following conclusions: The mosquito serves as the intermediate host for the parasite of yellow fever and it is highly probable that the disease is only propagated through the bite of this insect.
Page 202 - While yellow fever is a communicable disease, it is not contagious in the ordinary acceptance of the term, but is spread by the infection of places and articles of bedding, clothing, and furniture.
Page 115 - Several years ago I saw, professionally, a boy six years of age who had been suffering for some months from the glands on one side of his neck being swollen and a fetid ulceration around the back teeth of the lower jaw of the same side. Three months...
Page 146 - ... disease to a greater degree than was generally suspected. From what he had observed in one of the large military hospitals, in which hospital gangrene had existed, during the late rebellion, he thought flies should be carefully excluded from wounds. Recently he noticed some flies greedily sipping the diffluent matter of some fungi of the Phallus impudicus.
Page 200 - ... vinegar. Others carried pieces of tarred rope in their hands or pockets, or camphor bags tied round their necks. The corpses of the most respectable citizens, even of those who did not die of the epidemic, were carried to the grave, on the shafts of a chair, the horse driven by a negro, unattended by a friend or relation, and without any sort of ceremony.