HISTOLOGY. 17 



Exercise No. 2 Use the Polariscope. 



1. Place the microscope upon the table and take off 

 the objective. 



2. Attach the analyzer. 



3. Reattach the objective to the lower end of the 

 analyzer. 



4. Place upon the stage the specimen. 



5. Now place upon the specimen the selenite plate. 



6. Now attach the polarizer and proceed to examine 

 the preparation. 



Use the Abbe : 



1. Place the object upon the stage and get a good 

 light. 



2. Screw the Abbe around in place and regulate the 

 light by the use of the iris diaphragm. 



3. Examine, note and draw. 

 Exercise No. 3. Use the Microtome. 



1. Place the tissue in the" clamps of the instrument 

 and fasten it. 



2. Set your knife so that it will be at an angle with 

 the tissue. 



3. Have the block of tissue of the right size, and 

 gently but firmly draw the knife across the tissue. 



