Insects and Diseases A Popular Account of the Way in Which Insects may Spread or Cause some of our Common Diseases

One of the worst scourges of Africa and one that is to-day attracting world-wide attention is the disease known as trypanosomiasis, the terminal phase of which is sleeping sickn...

Mosquitoes are no more abundant now than they have been in the past, but when Linnæus in 1758 made his list of all the animals known to exist at that time he catalogued only six...

Yellow fever is a disease, principally of seaport towns, from which the United States has suffered more than any other country. It is endemic only in tropical regions but is oft...

The page shown in Fig. 37 was copied from one of our old second readers and shows something of the spirit in which we used to regard the house-fly. A few of them were nice thing...

Plague has always been one of the most dreaded diseases, and when we read of its ravages in the old world and the utter helplessness of the people before it we do not wonder tha...

MINCHIN, E.A. Report of Anatomy of the Tsetse-fly (_Glossina palpalis_). _Proc. Roy. Soc._, London, 76, Series B, 1905, pp. 531-547. Good account of internal anatomy of this fly...

It has been estimated that there are about four thousand species or kinds of Protozoans, about twenty-five thousand species of Mollusks, about ten thousand species of birds, abo...

Ever since the beginning of history we have records of certain fevers that have been called by different names according to the people that were affected. As we study these name...

The dictionary says that a parasite is a living organism, either animal or plant, that lives in or on some other organism from which it derives its nourishment for a whole or pa...

The other group or Phylum of animals with which we will be particularly concerned is known as the Arthropoda, which means "jointed-feet" and includes the crayfish, crabs, spider...

On the border line between the plant and the animal worlds are many forms which possess some of the characteristics of both. Indeed when an attempt is made to separate all known...

_Sleeping Sickness_, 161; its occurrence in Africa, 161; caused by a Protozoan parasite, 162; the tsetse-fly, 163; _Elephantiasis_, 164; caused by parasitic worms, 164; their de...

Numbers, 76; interest and importance, 76; eggs, 77; always in water, 77; time of hatching, 77; _Larvæ_, 78; live only in water, 78; head and mouth-parts of larvæ, 78; what they...

The old attitude toward the house-fly, 57; its present standing, 58; reasons for the change, 58; _Structure_, 59; head and mouth-parts, 60; thorax and wings, 61; feet, 62; _How...

_Bacteria_, 15; border line between plants and animals, 15; most bacteria not harmful, 15; a few cause disease, 15; how they multiply, 15; parasitic and non-parasitic kinds, 17;...

A disease of tropical or semi-tropical countries, 120; outbreaks in the United States, 120; parasite that causes the disease not known, 121; formerly regarded as a contagious di...

Definition of a parasite, 1; examples among various animals, 2; _Parasitism_, 3; effect on the parasite, 4; how a harmless kind may become harmful, 5; immunity, 6; _Diseases cau...

_Ticks_, 26; general characters, 27; mouth-parts, 27; habits, 27; life-history, 27; _Ticks and disease_, 28; _Texas fever_, 28; its occurrence in the north, 28; carried by a tic...

Numbers, 40; importance, 41; losses caused by insects, 41; loss of life, 42; _The flies_, 43; horse-flies, 43; stable-flies, 44; surra, 45; nagana, 45; black-flies, 46; punkies,...

Early reference to malaria, 106; its general distribution, 106; theories in regard to its cause, 107; insects early suspected, 107; _The parasite that causes malaria_, 108; stud...

Great scourges, 142; the "black death," 142; old conditions and new, 143; _How plague was controlled in San Francisco_, 143; _Indian Plague commission_, 144; Dr. Simond's claim,...