By t/ij courtesy of 



McssTS. F. Davithon dr' Co. 



A Section of Human Skin 



The corkscrew-like pores, leading from the sweat glands to the surface, 

 are plainly seen in the section. 



2. The Face of a Fly 



A wonderful photograph, at 15 inches, taken by the micro-telescope. Notice the very 

 large size of the eyes relative to the rest of the head. 



