4 BACTERIOLOGICAL DIAGNOSIS. 



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, &c., at the 

 patient's bedside. Swift & Son manufacture a micro- 



^ 



FIG. 3. Portable Microscope. 



scope 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 also supplies a 

 portable instrument, the cost of which (without lenses) 

 is $. This is very ingeniously made, and will carry an 

 oil immersion lens quite well : it is perhaps the most 

 suitable stand for a practitioner who may have to do 



