30 



Journal of Applied Microscopy. 



of the operations necessary for practical 

 worli and to give him such information 

 that he will be able to sti-ike out inde- 

 pendently and intelligently in any direc- 

 tion in which his investigation may sub- 

 sequently lead him. Before passing on, 

 it may be well to note that the success- 

 ful and economical conduct of the fin- 

 ances of these laboratories depends on 

 the adoption and rigid adherence 

 to a simple and adequate sys- 

 tem of controlling the quality and 

 quantity of purchases and the amount 

 of expenditures. When the original 

 equipment was purchased every item 

 was entered upon suitable cards, w^hich 



erty. Any defects in supplies purchased 

 or unsatisfactory transactions can be 

 noted for future reference when placing 

 orders. The card system has the 

 advantage over others that obsolete 

 matter can be easily discarded. 



The research laboratory (A) is pro- 

 vided with the same kind of tables, 

 stools, and lockers as the general labora- 

 tory, also special table for Bunsen burn- 

 ers, etc. The microtome is one of the 

 most used instruments here and the 

 table in the middle of the room is pro- 

 vided with two of the most complete 

 instruments obtainable, one for serial 

 work, the other for collodion sectioning 



HOOD FOR STERILIZERS, SLATE-TOPPED WORKING TABLE, AND GENERAL REAGENT CASE, 

 IN BACTERIOLOGICAL AND PATHOLOGICAL LABORATORY. 



were afterward filed alphabetically 

 under the name of the article in a card 

 cabinet (see plan). The entry not only 

 included the name of the article, but the 

 name and address of the manufacturer 

 or dealer of whom obtained, and the 

 catalogue number by which it is known, 

 together with the date of the catalogue 

 referred to, dimensions, and number or 

 qiiantity ordered, date of order, and 

 date order was filled. When subsequent 

 purchases are to be made the cards are 

 consulted and are an accurate guide to 

 the amount of material which will be 

 required for a stated period as well as 

 giving the source of supply and the cost. 

 From these records the expenses of the 

 laboratory can be reckoned for any given 

 time as well as an inventory of its prop- 



and cutting large pieces of tissue and 

 large objects. The assistant professor's 

 roll-top desk and revolving book-case 

 occupy a quiet corner. A large aquaiium 

 with a constant supply of running -water 

 furnishes living material. The card 

 cabinet and cabinet of prepared micro- 

 scopic objects is also found here, the 

 latter containing the especial series illus- 

 trating the more difficult problems con- 

 sidered. The professor's private room 

 (B) is equal in size to the research 

 laboratory and serves the purpose of 

 study, office, and private laboratory. 

 Here special demonstrations of difficult 

 subjects are given to small groups of 

 students, who are thus brought more 

 closely in touch with their preceptor. 

 The lockers, work-tables, aquarium, 



