2 CLINICAL BACTERIOLOGY AND HEMATOLOGY 



lens ; and in most cases it is useless to think of having an 

 inefficient fine adjustment altered for bacteriological use. 



There are now many microscopes which are sold at a com- 

 paratively small price, and which will answer every purpose. Of 

 these, Leitz's IB. stand, with the lenses above mentioned, a triple 

 nose-piece (which is so great an advantage that it might almost be 

 called an essential), and two eye-pieces, costs about ^^13, and may 



Fig. I. — Bacteriological Microscope. 



be highly commended. The stand is very firm and strong, the 

 fine adjustment delicate, and the lenses altogether admirable. The 

 only objection to this microscope is that it is rather heavy ; this is 

 an advantage for laboratory work, but it is a disadvantage for a 

 medical man, who may have to examine blood, etc., at the patient's 

 bedside. Swift and Son manufacture a microscope of much the 

 same type at about the same price ; it has all the good points of 

 the Leitz microscope and is somewhat lighter. The same firm 



