XXXii INTRODUCTION. 



Where the word " alcohol " or " spirit " and not " absolute 

 alcohol " is used, strong methylated spirits can always be 

 understood, and is far cheaper. The alcohol on the working 

 table is best kept in a " wash-bottle," made with a triangular 

 Florence flask of about four ounce capacity, and fitted with 

 a cork in preference to india-rubber. Another wash-bottle, 

 which, for distinctness, should somewhat differ from this in 

 shape, should contain distilled water. 



In arranging the table for work, while the microscope is 

 placed in front of the worker, and near the edge of the table, 

 the space at its right-hand side should be reserved for books, 

 drawing appliances, etc., while all the working materials 

 which are liable to make even the slightest mess should be 

 rigidly confined to the left-hand side. 



For the preservation of permanent preparations, many 

 kinds of cabinets, and cases are advertised. It is very impor- 

 tant to remember that the objects should be kept in a hori- 

 zontal position, and should be capable of ready supervision. 

 One of the best for this purpose at a moderate price is a 

 cloth-covered box with cardboard trays, each covered by 

 hinged cut flaps, which is made by R. & J. Beck, Ltd., price 

 8s. 9d., and holds 288. 



