Show PROVES PERIL OF ML MIL OBES OSES Experiments of Parisian I ln Biologist With Common Fly Has Interested the Scientists ts I To determine Just what effect t co com co- complete absence of ot microbes would on the life of animals ia Is one o 0 o. o fascinating problems of the day In his experiments experiment since May 1 1911 HIll a Parisian biologist has reared about forty generations of the tho tho I common fly producing about individuals in a single line and has kept specimens under continuous exclusion exclusion ex ex- elusion from microbes feeding them with specially sterilized rood food At 75 degrees Fahrenheit the development development de de- de from Crom the egg egl nas been completed com corn In twelve days laying being begun berun be be- gun run by the female In a day or two after after aft aCt er emerging In the adult state The flies Hies have continued quite normal and the successive generations have shown no lessening of fecundity In development under the conditions I of protection there has been a great gain the usual lar largo large mortality of the tha larvae and pupae having been reduced to practically nothing |