PLATE XVI. 





FiS 



Glass shades for protecting objects from dust 

 being mourned, p -17. 



g'. 



Dr. Maddox's spring clip. p. 53. 



Fag. 90. 



Modified spring clip. p. 52. 



for containing Canada balsam, gum, 

 cements. Sec p. SO. 



Mr. Shadbolt's apparatus for making round cells of 

 Brunswick black, p. 60. 



Fig. 92. 



Fig. 94. 



To illustrate the manner in which the 

 diamond is used for cuttini thick glas*. 



p. 61. 



Fig. 95. 



Flat brass rings, for cutting circles 

 of thin ftlass. p. 61. 



Fig. 93. 



Large bradawl. for 

 scraping away super- 

 fluous marine glue in 

 making cells, p 62. 



Writing diamond, for cutting thin 

 gla-Js. p. 61. 



Flf*. 96. 



Arrangement for exerting continued pressure upon the 

 glass covers of nine specimens wnile the cement is drying. 



p. 51. 



[To face page 62. 



