1916 Journal of Applied Microscopy 



in one part of the laboratory, while the apparatus for preparing media, etc., is 

 conveniently grouped together in another part, so that students making media 

 interfere in no way with those who are studying, and vice versa. 



The laboratory abounds in many other conveniences for saving time and 

 doing accurate work. Two nivellating tables, taking the place of the usual 

 nivellating apparatus, occupy a position in the west part of the laboratory. They 

 are covered with glass hoods, which keep out dust and at the same time admit 

 light. Under these hoods inoculation of plates may be made with but small 

 chance of infection. 



A chemical cabinet, supplied with numerous stains, sugars, salts, alkalies, and 

 acids necessary for use in the laboratory, together with balances and large 

 scales, is placed handy to the tables for making culture media. 



The laboratory library, occupying one corner of the room, separated from 

 the main laboratory by a half-partition, is furnished with study tables, chairs, 

 and best of all with an excellent collection of reference books. Spare moments, 

 while waiting for media to sterilize, etc., are here utilized to good advantage, as 

 well as the hours specially devoted to reference work. 



A large cabinet for storing media has proved a great convenience. It is sup- 

 plied with large drawers, in the bottom of which is a sliding box similar to those 

 used in a library card cabinet. By moving this block backward and forward, 

 either a small or a large number of tubes may be kept erect, avoiding the possi- 

 bility of spilling or breaking, as is the case when loosely stored. 



Wall shelves are located in convenient places, on which are found solutions 

 of various disinfectants, alcohols, distilled water, measuring utensils, etc. A 

 large supply of graniteware utensils of various sizes and forms are conveniently 

 stored on shelves or in cupboards immediately under the tables used in making 

 culture media. 



Each student is furnished with a personal locker, detailed description of the 

 construction of which was given in this journal in February, 1S98. In this he 

 finds a rack containing all bottles necessary for stains, two wire baskets, and 

 two tin receptacles for storing test tubes, media, and cultures not put in the 

 incubator, also a convenient holder for cultures while at work. (This is simply 

 a block one and three-fourths inches thick with holes bored in one and one-half 

 inches deep. The tubes may be placed in these without danger of falling over.) 

 Inoculating needles, filter paper, jars containing cleaning mixture, complete the 

 equipment of the locker. A small room off the general laboratory is used as 

 general supply room, and wash-room for the janitor. 



A very important adjunct to the laboratory, though not connected imme- 

 diately with it, is the animal house. In it is found an abundant stock of guinea- 

 pigs, rabbits, and mice. These, by continual breeding, with an occasional im- 

 portation from other pens, maintain the stock. When an animal is inoculated 

 it is immediately placed in a wire cage in a separate room, thus avoiding the 

 infection of stock animals. 



But better than all the practical apparatus and the conveniences of the 

 laboratory, are the thoroughly practical methods employed in it, which will con- 

 stitute the basis for a separate article. 



Cornell University. B. R. HoOHl.KR. 



