ADJUNCTS TO THE MICROSCOPE. 49 



Animalculce Cage is a round cell with a glass bottom and 

 top, for confining a drop of water with animalculae. 



Fig. 20. 



Watch- Glasses and Fishing Tides, are useful adjuncts. The 

 latter, Fig. 19, are glass tubes of various sizes, by which when 



5 



