Show OF FLIES many are wondering where so BO many flies come from these days read bead the following estimates of the number of defendants of a single pair 0 of f ali flies os in four months A common fly lays four times during the summer sum mer sea son eon each time an of eighty eggs which males makes one half ot these are supposed to to females so that each of these thesa four foar broods produce forty fony I 1 first eight hor forty females of the first brood also lay four times time in m the course of tha summer which calces the first ei eighth ath of these thebe last or 1610 females lay three times making a betting of tie T e second eighth lay lav twice or eggs ega to the number of tue third and fourth eh eighth lith lay at least once each oi or 2 the second eighth ar the orty females of the second brood lay three times and pr produce oatice eg edja to the amount 1 cf one sixth of these ia e or 1603 fa it a malea lay three time or els egea to the th number oi of the sixth lay lav twice il the ea as numbering T the h third eideh once or 3 the third eighth or the forty females of the brood lay twice or erab to the num her berof of one fourth of those these or 1600 females lay twice more which is 4 the fourth eighth or forty females of the fourth brood have one laying period each which produces produce a eggs to the number of na half of these last or 1600 fe luale will also lay so 89 eap each ach which gives gevea us 10 28 00 total product of a singla agle pair of flies in in ona season it has been estimated that if each fly hatched should shaula live to ba 4 years of ae a at the end of that time they would form a solid mass mas 3 around the eari ean h extending to a height of fifty miles or about the estimated of our atmosphere atmos phera |