PLATE XVII. 



Fig. 97. 



Fig. 95. 



; Camming objects 



rrosive 

 liuiils p 62 



Fig. I. 



Holder, constructed of two pieces of whalebone ti<?d together 

 or riveted at both ends. p. 51. 



Fig. ICO. 



Illustrates a simple way of making a 

 moderately thick glass cell. p. 63. 



FiET. 102. 



ate the manner in which thin glass may be 

 perforated for making thin glass cells, p. 63. 



Fig. 101. 



cells for preserving injections and other thick 

 preparations, p. 61. 



Fig. 103. 



TMn glass cell for examining deposits 

 from fluids, p. 63. 



Fig. 104. 



Large deep glass cell?, for preserving opaque 

 preparations, p. 64. 



Concave glass cell, made by grinding out a cup-f- 

 cavity on the surface of a piece of very thick glass. 

 Tt is afterwards polished, p. 64. 



Fig. 105. 



$ cells maide ty grinding oc the centre of a piece of plate glass, p. 64. 



[To face page 64. 



