METAMORPHOSIS 



391 



FIG. 270. Enlarged lapping organ at the tip of the fly's mouth. Typhoid and other germs 

 are easily taken up and carried by the fly's mouth and feet. (Fights of the Farmer.) 



FIG. 271. Foot of the house fly showing how numerous bacteria can be carried on 

 the hairs. A, last joint and claws; B, claws and pads; C, small section of pad much more 

 enlarged, showing hooked hairs. (Fights of the Farmer.) 



