MICROANALYTICAL AND BACTERIOLOGICAL LABORATORY 421 



chona test, color reaction tests for boric acid, salicylic acid, morphine, and 

 opium; tests for phytosterol and cholesterol crystals, etc., etc. These 

 and other tests are explained in the several reference works cited above. 

 In the examination of liquids or semi-liquids as wines, beers, cider, vine- 

 gar, milk, cream, sewage, extracts, tinctures, etc., a centrifuge is 

 desirable. 



E. Bacteriological Work. The pharmacist should be prepared to do 

 the following work in the bacteriological laboratory. 



(a) Prepare culture media for use of physicians, as may be required. 

 () Prepare sterile throat swabs for the use of physicians. 



(c) Prepare stains and do staining for physicians, as may be required. 



(d) Make bacteriological determinations of milk, jams, jellies, im- 

 pure drinking water, vinegar, wine, sera, vaccines, antitoxins, contam- 

 iated foods and drinks, sewage, etc. 



(e) Sterilize pharmaceuticals, surgical supplies, etc. 



(/) Assist the physician in opsonic work, as may be arranged or agreed 

 upon. 



(g) Do bacterial culture incubation work for the physician, make sub- 

 cultures, Wassermann test for syphilis, etc. 



(K) Filter and sterilize drinking water to be supplied to customers. 



F. The Cabinet of Microscopic Exibits. In every laboratory where 

 bacteriological and microanalytical work is being done, there should be 

 an exhibit of all of the substances which are likely to come under obser- 

 vation, in order that any desirable comparison may be immediately 

 made. The following suggestions are for the cabinet intended for general 

 microanalytical work. Those interested can readily prepare a special, 

 more limited cabinet, from the suggestions hereby presented. 



The exhibit is to consist of objects and materials which may prove 

 of analytical value and use in making comparisons and for purposes of 

 check work and re-verification. The exhibit is not to include samples of 

 the materials secured for the purpose of study or examination as to 

 identity, quality or purity. Such materials may be kept in a separate 

 cabinet, and for such periods of time only, as they may or might be of use 

 for further study and comparison. If the examination shows that the 

 article is of the quality for which it was purchased, then no sample need 

 be kept. If it proved to be adulterated or of inferior quality, then a 

 sample should be retained until the matter is finally settled or disposed of. 

 In case of a retail pharmacy, the stock of drugs on hand, is the exhibit 

 of the articles which have been examined and compared with the articles 

 , in the microscopic cabinet. Should the microanalyst devote his entire 

 effort to food products, then the cabinet will be stocked with pure and 

 representative food products spices, flours, meals, etc. 



