'k'v ..> >4Vi^ 



PhMo (/;/] 



[A'. /. Hliillu. 

 SUCKING APPARATUS OF HOUSE-FLY. 



Ihi8 18 the thick process beneath the head of the Fly with which it makes continual dabs at our (ood as it walks over the 



c. It IS here flattened out for examination under the microscope, which shows it to consist of many delicate tubes opening 



out into two larger ones. Through these lubes all the Fly's food is sucked up, and passed through the larger tubes to the tnoulli. 



