PART II. 



CHAPTER I. 



SHOP WORK. 



The Shop. One of the most valuable assets which a 

 modern pharmacological laboratory can possess is a well- 

 equipped shop controlled by a skilled mechanician. While 

 the expense of these may be too great for many laboratories 

 their value should be duly emphasized, in order that those 

 who may, from time to time, find themselves in position 

 to equip a shop, or to hire a mechanic, may not hesitate to do 

 so. It is always advisable to buy a first class equipment if 

 the available funds are sufficient. But if only a small 

 amount of money is obtainable the judicious expenditure of 

 the sum for the riglit tools and supplier may yield exceed- 

 ingly satisfactory returns. And if a special mechanic can- 

 not be obtained the technician or diener, or the members of 

 the teaching staff themselves, may often secure most satis- 

 factory results from a few hours' work in the shop. It is 

 the purpose of this chapter to indicate briefly the nature of 

 the equipment which, in the author's opinion, a shop should 

 contain, and further, to give a few directions for carrying 

 out some of the more elementary and essential mechanical 

 processes which will be of greatest service in the laboratory. 



When plenty of space is available the shop should be in 

 an independent room which should be, if possible, at least 

 twenty feet square. A room twenty by twenty-five (or 

 even thirty) feet in its dimensions is preferable if it can 

 be obtained. This point should lie carefully considered in 

 the building of new laboratories. If possible the shop 

 should receive an abundant supply of light from the north, 



