SURFACE VIEW OF THE COMPOUND EYE OF A FLY, SHOWING SOME OF THE THOUSANDS OF CORNEAL FACETS 

 Corresponding to each facet is a complete "eye-element," including a double lens and a percipient retina or retinule. 



PHOTO OF STATUE TAKEN THROUGH THE LENSES OF THE FLY'S CORNEA 



A multitude of images has been formed, one image through each of the thousands of lenses. The photo-micrographs of the fly's eye 

 were taken by means of Davidson's "Davon" Patent Super-Microscope, in which an achromatic combination called a "collector" is 

 placed behind the objective in the microscope. This projects an "air" image of the object under examination beyond it. and this "air" 

 image is magnified by another objective and eyepiece acting as a compound eyepiece. The result is that higher magnification can be 

 employed on any given objective than is usually employed and without loss of resolution. 



