INSECTS' EYES. 



Leuwenhoeck, Barter, Reaumur, Lyonnet, Paget, Miiller, Strauss, 



Duges, Kirby, &c., the following are the number of eyes iu certain 

 species : 



Number of eyes. Number of eyes. 



The Ant and the Zenos 



The Sphinx . . 1300 



The common Fly . . 4000 



The Silkworm . . 6236 



The Cockchaffer . 8820 



50 I The Cosus Lipniperda 



The Dragon Fly . 

 The Butterriy 

 The Mordella 



]]300 

 12544 

 17355 

 25088 



4. But if the perfection found in the most minute workmanship 

 of nature excite our admiration, how much more must we admire 

 and wonder at the approaches which have been made to a similar 

 degree of precision and perfection by the comparatively feeble and 

 imperfect agency of the human hand. "We propose in the present 

 article to call the attention of our readers to some striking exam- 

 ples of such skill and address, with which the general public is 

 not already familiar. 



5. The improvements which have been made within the last 

 quarter of a century, in the construction of microscopes, has 

 created a demand for a class of drawings and engravings of a 

 degree of minuteness approaching to that of the objects to 

 which the researches of observers have been addressed. This 



E 2 51 



