APPARATUS AND MATERIAL 



Apparatus. The apparatus and material for use in bacteri- 

 ologii' in a student laboratory fall very naturally into three 

 groups, viz. : (i) apparatus to be used in common by all stu- 

 dents, and for which no individual is responsible excepting 

 when in actual use by him, and the supplies from which each 

 student draws the necessary quantity for the work assigned ; 

 (2) apparatus to be assigned to each student for personal 

 use and for which he is wholly responsible ; and (3 ) material 

 such as notebooks to be provided by each. The assignment 

 of equipment and supplies in accordance with this plan has 

 been made in a general way, as indicated in the following 

 paragraphs. 



(i) Apparatus in laboratory for general use. This includes 

 the apparatus and chemicals to be used in common by all 

 students, and consists of pans and brushes for cleaning test 

 tubes and other glassware, meat mincer and press, large and 

 small water baths, steam sterilizers, hot-air sterilizers, incu- 

 bators, thermometers, thermostats, gas burners, balances, level- 

 ing tripods, Wolflfhiigels' or other apparatus for aid in counting 

 colonies, micrometers, metric rules, burettes, tripods, funnels, 

 beakers, pipettes, graduates, glass tubing and rods, also the 

 chemicals necessary for carrying on the work, such as various 

 acids and alkalies, disinfectants, alcohol, aniline dyes, and those 

 articles needed in the preparation of culture media, such as salt, 

 peptone, agar, gelatin, meat extract, sugars, litmus and other 



