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EXPERIMENTAL PHARMACOLOGY 



tools, lighting, etc., must be worked out independently in 

 each laboratory. An arclight which can be raised or low- 

 ered by means of a rope passing over a pulley is probably 

 the best source for artificial light. In institutions where 

 only a very limited floor space is available the shop work 

 may be carried out in one end, or even in one corner, of 

 the class laboratory itself. This arrangement is by no 

 means ideal but it may be effective. And much valuable 

 work has been done under just such circumstances as these. 

 The work bench or heavy table should be placed near a 



Fig. 359. Foot bellows. 



window if possible. A second table for work on small 

 articles should also be provided. 



When possible the shop should be located in a portion 

 of the building from which noises arising from the me- 

 chanical work cannot be heard in the libraries, in other 

 departments, or in the lecture room of the pharmacological 

 department. In buildings constructed of concrete or other 

 similar material, vibrations from the shop caused by the 

 operation of a heavy lathe, etc., may sometimes disturb deli- 

 cate apparatus in rooms located even at very considerable 

 distances from the shop, or in some instances, perhaps in 



