VACC1NE-THEBAPY 3 



a line with the water-mark. Various-sized flasks will be 

 found useful, ranging from 100 c.c. to 1,000 c.c. When the 

 practitioner, for monetary reasons, is compelled to limit 

 his expenditure in fitting up his laboratory, it is astonish- 

 ing how he can with a little ingenuity economize. For 

 example, a Thermos flask may take the place of an incu- 

 bator, an opsonizer, and moist-heat sterilizer, the only 

 extra required being a thermometer, which is passed 

 through the cork. Then, again, a cheap dry-air sterilizer 

 can be improvised by using an ordinary baking oven, and 

 suitable for sterilizing glass ware, instruments, etc. 



The following is a list of requisites necessary for the 

 laboratory, with an improvised addition : 



Incubator and opsonizer. ) 



Sterilizer (moist), Koch's.) 



Sterilizer (dry). 



Centrifuge (hand, water, 

 electric) . 



Pair of scales. 



Thermometers (one register- 

 ing up to 100° C, and 

 one to 300° C). 



Improvised. 

 Thermostat. 



Baking oven. 



