The Microscope. 



199 



miniature section jars which are sold by druggists in sets of three, 

 holding each about two fluid- ounces, will be found most convenient 

 for many uses. 



IMPLEMENTS. 



A pair of very delicate tweezers, such as are sold for microscop- 

 ical purposes. Four of the best red-sable brushes, with the hair 

 about one-fourth inch long. Common camel-hair brushes do not 

 serve so well, as they usually shed hair and are not stiff enough. 



A fine needle, which has been heated in an alcohol flame, and 

 hammered thin towards the pointed end, which should be rounded 

 on a whetstone. Set this needle in the small end of a handle cut 

 from one of the sable brushes, which are sold with handles twice as 

 long as are needed for our purposes. 



Some pieces of glass, which may be made by cutting in two the 

 ordinaiy 3x1 inch slips. 



The cut represfiiis a sectional view of the niouriting box : e is the box, 6KxB/^ inches, 

 and A% inches in heig:ht, constructed of rosewood : c is the cover, to which is attached 6, 

 tlie slide rest with centering spot o. This is removable. Beneath is the ground glass plate 

 a, /. At d is a mirror set at about 45 deg. angle, reflecting the light from the opening at its 

 lowest end (the side is here wanting) up througli a to o. 



Clips made of spring-brass wire, a little over ^^ of an inch in 

 diameter, which can easily be made with a pair of pliers. Equiva- 

 lent clips may sometimes be bought of opticians. 



The mounting and dissecting box, shown by cut herewith, is 

 not an essential implement in the processes to be described, but is 

 most convenient, and much better work may be done with it. With 

 the top removed, it is, for dissecting purposes, or any microscopical 

 preparation in which a strong light is desired — and by this device 

 the light is obtained by reflection from the mirror inside, which 

 illuminates the plate-glass, ground on the under side to prevent an 



