IN MICROSCOPIC INVESTIGATION. 359 



VIII. Preservative Fluids. 



NECESSARY. ADVANTAGEOUS. 



36. Solution of naphtha and creosote, Gum and glycerine. 



102. 107. 



3 7 . Chrom ic acid. 104. 



38. Turpentine. 



39. Canada balsam. 94. 



IX. Apparatus Required for Making Cells and for Cutting and 



Grinding Glass. 



40. Brass plate for heating slides to which Shadbolfs apparatus. 



marine glue is to be applied. 72, 116, pi. XVI, fig. 

 pi. XIV, fig. 68. 91. 



Cements before enumerated. 87 

 to 98. 



41. Small brush made of bristles. 



42. TinfoilQi different degrees of thickness. 



nS. 



43. Writing diamond. 119, pi. XVI, Brass rings for cutting 

 fig. 94. circles of thin glass. 



44. Glazier's diamond. 119, pi. XVI, 119, pi. XVI, fig. 95. 

 fig. 92. Wooden forceps for hold. 



45. Flat stone or pewter plate for grinding ing glass slides. 82. 



glass. 120. 



46. Emery powder. 



47. Old knife and small chisel for cleaning 

 off superfluous glue. 123, pi. XVI, 



% 93- 



48. Solution of potash (liquor potassae). 



49. Sections of glass tubes and of thick Shallow concave glass cells. 

 square vessels, of various sizes, for Moulded glass cells. 

 making cells for the preservation of 130. 



injections. 127, pi. XVII, figs. 

 101 to 105. 



X. Apparatus for Preserving Objects In Air, Fluid, and Canada 



Balsam. 



50. Cells of various sizes, before enume- Apparatus for pressing 

 rated. 126, pi. XVII, fig. 100. down the thin glass 

 Brunswick black. cover while the ce- 

 Gum thickened with whiting. 97. ment is drying. 



51. Thin glass cut of the requisite size. 96, pi. XX, fig. 128. 



