Show J PEST SPREAD B BY Y MOSQUITO Scientists H Have ve Traced Cause Causo of Disease Dis DI ease That Has Hal Long Lone Been Prevalent Prevalent Prey alent agent In the tho Tropics Tropic One of ot the most peculiar of all aU dl s- s eases sex ases Is common In the trop trop- I ics In the blood blond of ot persons suffer suffering I lug ing from It there are found innumerable Innumerable I able little worms that can cnn be seen only by the aid of ot a microscope These are present only at night In the blood that Is circulating At about five o'clock In the afternoon they begin to appear In the blood having been hidden hidden hidden hid hid- den away In the body until this time and then they remain In the circulation 1 tion until about midnight when they begin to diminish By eight or nine o'clock In the morning they have all disappeared and a search of ot the blood under the microscope after this falls fails to reveal re any The They are now collected in certain large blood vessels deep inthe In Inthe Inthe the body especially In the lungs where they remain hidden until they go out on their next nest nocturnal sion o The parasite Is conveyed to human beings s by the bite of or certain kinds of t mosquitoes The mosquito bites and takes from drum a man or from some animal animal animal ani ani- mal as the case ma may be blood which contains these small worms In the stomach of ot the mosquito the Intermediate Intermediate Intermediate diate host the parasite goes through certain definite changes or s which are just as necessary to toUs Its Us complete life as are the different phases In the lives Ih-es of ot butterflies moths and amI a great many Insects First it esc escapes ipes from a skin or shell In which which It has haa existed Then It bores its way through the wall of ot the mosquito's mosquitos mosquitos mosquito's mosquitos mosquito's mos mos- quito's stomach and travels forward through the body until It arrives at atthe atthe atthe the base of the bill or proboscis |