322 INSECTS ATTACKING STOCK AND POULTRY 



full size in about a week. Pupation takes place in the ground. 

 The reddish-brown pupa is one-third of an inch long. After about 

 a week in the pupal stage, the insect emerges as an adult. 



Injury. Since these insects fly from dead matter to parts of 

 living animals, including man, dogs, sheep, cattle, horses, etc., 

 it is evident that a wound can be very seriously poisoned. In 

 consequence, great pain and even death may be caused by the 

 attacks of this fly. Human beings with severe colds are sometimes 

 attacked, flies depositing their eggs in the nostrils. The author 

 has seen maggots of this species removed from a baby's hand upon 

 which had been placed sweet oil. The maggots force their way 



FIG. 327. The screw-worm fly, enlarged. (Lugger.) 



into the flesh, feeding voraciously, and thus enlarging the sores. 

 The animal attacked is soon killed if the pest is not removed. 

 Human beings die if, when infested in nose or ear, immediate 

 treatment is not procured. This pest is much worse in the South 

 than elsewhere, but occurs in the North in considerable numbers. 

 Control. The eggs are said to be destroyed by sunlight. 

 Prompt attention should be paid to the health of all farm animals, 

 and all sores should be quickly treated. A physician in the case 

 of human beings or a veterinarian in the case of stock should be 

 consulted immediately after infestation. Filth of any sort should 

 not be allowed to accumulate. Wounds should be promptly 

 cleansed and anointed with an antiseptic, such as extremely dilute 



