THE COMPOUND MICROSCOPE AND ITS USE 



In order that one may be able to make the best and safest use 

 of so complex, deUcate, and expensive an instrument as a com- 

 pound microscope a limited amount of time is set aside for the 

 study of its construction, care, and use. 



Possibly all will profit somewhat by a careful examination of 

 the instrument which is to be used during the course. The 

 following instructions are primarily for beginners, but all are 



Ocular 



Draw fube 



Body -fube 



Coarse 

 adjusimenf 



Nosepiece 



Objectives 



Stage 

 Iris diaphragm 

 Condenser 

 Mirror 



Fig. 



asked to read them and perform the various manipulations which 

 are mentioned. As those who have never used a microscope will 

 require extra time for the study of its parts and especially for 

 the practice which is necessary to the effective use of the instru- 



36 



