PLATE ; XII. 



Pig. 



Fig. 141. 



fig. 1 I. 



Small retort stand, with tunnel and 

 arranged for filtering, p. 84. 



Pipettes made of glass To illustrate the mode of using the pipette, p. i 



tubing, p 84. 



Fig. 142. 



To illustrate the manner in which the thin glass is allowed to fall gradually upon 

 an object mounted in fluid p. 77. 



Fig. 143. 



Fig. 146. 



Fig. 145. 



it over the glass slide It is kept in position 

 by an india-rubber band. p. 85 



Mode of collecting deposit upon a 

 glass slide from fluid contained 

 pipette. } . 



Corked tubes for containing 

 prepared tissues, &c. 



Mode of folding filtering paper, p 84. 



[To face page Sc. 



