X CONTENTS. 



147. Lubricants ^ i54 



148. Lubricants for cutting tools 154 



Viscosity 



149. Viscosity of fluids and solids, general considerations 155 



150. " " water in centipoises, temperature variation 155 



lei. " " ethyl-alcohol- water mixtures, temperature variation . , 155 



152. " and density of sucrose aqueous solutions, temp, variation . 156 



153. " " " " glycerol " " at 20° C 156 



154. " " " " castor oil, temperature variation 156 



155. " of miscellaneous liquids 157 



156. " " organic liquids 158 



157. Specific viscosity of solutions, density and temperature variation . . 159 



158. " " " " atomic concentrations, 25° C 163 



159. Viscosity of gases and vapors 164 



160. " " " " " : temperature and pressure variation . 165 



161. Diffusion of an aqueous solution into pure water 166 



162. " " vapors 167 



163. " " gases and vapors 168 



164. " " metab into metals 168 



165. Solubility of inorganic salts in water, temperature variation .... 169 



166. " " a few organic salts in water, temperature variation . . 170 



167. " " gases in water 170 



168. " " change of, produced by uniform pressure 171 



169. Absorption of gases by liquids 172 



170. Capillarity and surface tension, water and alcohol in air 173 



171. " " " " miscellaneous Hquids in air .... 173 



172. " " " " aqueous solutions of salts 173 



173. " " " " liquids-air, -water, -mercury .... 174 



174. " " " " liquids at solidifying point 174 



175. " " " " thickness of soap fihns 174 



Vapor Pressures 



176. Vapor pressures of elements 175 



177. " " and rates of evaporation, Mo, W, Pt 175 



1 78. " " organic liquids 176 



179- " " of ethyl alcohol 178 



180. " " " methyl alcohol 178 



181. " " " (a) carbon disulphide i79 



(b) chlorobenzene i79 



(c) bromobenzene i79 



(d) anihne i79 



(e) methyl salicylate 180 



(/) bromonaphthalene 180 



(g) mercury 180 



