The Microscope. 



THE MICKOSCOPE. 



THE most expensive as well as the most important arti- 

 cle required is the microscope, and a good one should 

 be procured. 



In purchasing a microscope, it is necessary to goto 

 an optician who makes his own instruments to get one 

 that is worth anything, as a large number are made by 

 wholesale manufacturers and sold to various traders 

 who put their names on them and sell them as their 

 own make. It is an easy matter to find out a bona 

 fide maker, as there are very few of them, and it is their 

 interest to sell a good instrument. A microscope 

 such as that required by anyone beginning a course of 

 histology, can be procured for 5 5s., and nothing worth 

 having can be bought at a lower price. If the instru- 

 ment be procured from a bona fide maker it will last a 

 lifetime with ordinary care. 



The compound microscope consists of the stand, eye- 

 piece, and object glasses. The stand should be a tripod 

 having a stage of blackened glass, and a draw-tube 

 lined with cloth. The tripod foot gives perfect steadi- 

 ness, and for this reason the Continental models with 

 horse- shoe foot have been given up by many of the best 

 microscopists. 



The price of these stands, with two object glasses, 

 ranges from 5 5s. to 6 12s. 6d. 



The student should ascertain by looking down the 

 tube with the eye- piece removed, whether the hole in 

 the stage is concentric with the tube, and then try the 

 different holes in the diaphragm in the same way. The 



