1895 THE MICROSCOPE- 23 



mounted. If you use the polarizer with it, you will find 

 it equal to double staining as regards the distinguishing 

 of different tissues. 



Fuller's earth, tripoli and electro-silicon show scores 

 of silicious forms beautifully symmetrical all classified 

 as diatoms or other organisms by the scientists. Lupu- 

 lin, lycopodium and starches all have a structure which 

 the microscope reveals clearly. 



Put a drop of pure comb honey on a slide some time, 

 cover it, and when magnified you will see grains of pol- 

 len which have fallen from the broad and fuzzy backs of 

 the indefatigable little workers, the bees. As an ana- 

 lytical point in the identification of honey, you can re- 

 member that the artificial honeys show no such compan- 

 ionship, for that honey is as far away from the pollen- 

 laden flowers as it has been from that busy little com- 

 munity, the bee-hive. — Pacific Druggist. 



Mounting in Canada Balsam. 

 By NO SIG. 



Every one after having prepared his objects or sec- 

 tions, is desirous of preserving them in a permanent 

 form in as neat a manner as possible and that with the 

 least trouble. The following manner of proceeding will 

 assist in obtaining good results. 



Turn a circle on the back of the slide in ink with a 

 pen, being careful that the circle is rather smaller than 

 the thin glass it is intended to employ, so that the re- 

 fraction of the balsam at the edges of the glass do not 

 interfere with placing it true in the center; the best 

 turn-table to employ is the concentric turn-table, made 

 by Aylward, of Manchester, Eng. The slides must al- 

 ways return absolutely to the same center. 



When the ink is dry, wipe the front of the slide well 

 with a clean cloth, and press or drop two or three drops 



