Page:What to do for Uncle Sam; a first book of citizenship (IA whattodoforuncle00bail).pdf/54

50 Courtesy, Agricultural Extension Dept., International Harvester Co.

BOYS MAKING FLY TRAPS IN SCHOOL

from which the larvae hatch, are laid in dirt of some kind, decayed food, manure, polluted ground and the like. One fly lays an average of one hundred and twenty eggs at a time and is apt to have nine families dure a season, Scientists tell us that this one fly may have several hundred thousand fly relatives in a very short time. These larvae stay in the dirt in which the eggs are hatched until they develop into adult flies. In the meantime their wings become laden with disease germs, and the flies carry these and leave them wherever they light.

A great many epidemics of fevers have been caused by flies, and doctors tell us that there are two and half times as many sick babies in houses where there are flies as in those without. Why not get rid of the flies, boys and girls?

Uncle Sam tells you just how to go about doing