THE BOOK OF THE LANTERN. 



243 



and 4-10ths of an inch. Its performance leaves little to be 

 desired. 



A far more elaborate form of lantern microscope is that 

 which is shown at fig. 62, and which has been designed 

 by Mr. Lewis Wright. In the opinion of most of our 

 eminent microscopists, including Dr. Dallinger and the late 

 Dr. Carpenter, this instrument is by far the most perfect 

 of the kind ever produced. It is certain that no better 

 effects are possible than are produced with high-power 



FIG. 62. 



objectives with this microscope, until the electric light 

 may be so perfected as to place a new power in our hands. 

 A flea 15 feet long, literally larger than an elephant, is 

 shown with this microscope brilliantly and exquisitely 

 defined, while the circulation of the blood in a frog's foot 

 can be as easily seen as by the table microscope. 

 E 2 



