INTRODUCTION 

 THE LABORATORY AND ITS EQUIPMENT 



The zoological laboratory should be a well-lighted room, 

 with sufficient space for each student to work comfortably. 

 When possible it is better not to have direct sunshine 

 through the windows during the hours of work. 



The laboratory must be fitted with some form of desks 

 or tables, at which the student can work with ease. When 

 good-sized laboratory tables were not available, I have 

 found individual tables, like the one shown in Figure i, 

 fairly satisfactory, especially for rooms which cannot be 

 permanently fitted up with more expensive desks. Such 

 tables have many advantages. On the one hand they are 

 readily movable, so that the space can be divided accord- 

 ing to the size of the class, no more desks being kept in 

 the room than are needed for use ; they are made of differ- 

 ent heights, so that they can be adapted to individual stu- 

 dents ; they may be shifted about as the conditions of the 

 light may demand ; they enable the teacher to insist that 

 each student shall work alone, without assistance from 

 others ; and they prevent the joggHng of the microscope of 

 others when a pupil uses the eraser, or is restless at his 

 desk. On the other hand, they are liable not to rest 

 squarely upon the floor if it is not carefully laid, or has 

 become worn through use, and in the form I have used 

 there is no drawer in which to keep appliances. The 

 addition of a drawer would render them more useful. 



