THe Microscope. ,; 243 
wood, stained, painted or polished. The boards for the top, 
bottom, sides and back, are cut from three-quarter inch or thicker 
material, to size required, making allowance for a door at front, if 
needed. The drawer proper, is cut from one-quarter inch material 
with a front three-quarters of an inch high. Mine has walnut front 
on pine trays. A slot or groove is cut in each side piece, so that this 
board, one-quarter inch thick moves easily in and out. When the 
ES grooves are cut, they appear as in the 
D. D. figure at Bp If we need twenty drawers, 
aa c.______] then twenty grooves are cut in each side 
a piece, and the sides are then attached to 
=: top, bottom, and back of case. If the 
boards for drawers are one-quarter inch 
thick, the grooves should be cut about 
nine-sixteenths of an inch apart. This 
allows one-quarter inch for thickness of 
drawer-board, filling the groove; one- 
half inch for strips D, making depth of drawer, and one-sixteenth 
inch for play. To further stiffen the drawer board and form the 
sides, strips are cut one-half an inch square as at pb, and bradded 
the length of the drawer. The brads are clinched. One strip is 
placed on each side of the drawer and on upper side as at D. 
The space between p and-p can then be divided by other 
strips, as required for slides. The above figure represents a view 
from the front of A and drawer board co, with side strips p and 
slots B; the front of drawer being removed. When the front of 
the drawer is attached the drawer occupies the space from top of 
D to bottom of c. 
_ It is well to make the drawer two or three inches longer than 
required for slide space, so that when it is open, and all theshdes 
visible, it is held firmly in position. 
THE WORKING SESSIONS. 
HOTOGRAPHY in its application to microscopy, and the dredg- 
ing expedition on Lake Chautauqua were new features of the 
Working Sessions of the last meeting of the American Society of 
Microscopists, of so much practical value that they should be con- 
tinued whenever possible, in future, sessions. An entire evening 
was devoted to photography under the direction of Hon. J. D. Cox, 
