C R A 



Flint, blackish ..*.." 2561 



Agate, oriental ..... 2590 



Prase ....... 2580 



Portland stone ..... 2570 



Mill-stone ...... 2483 



Paving-stone ...... 2415 



Touchstone ...... 2415 



Porcelain, Chinese ..... 2384 



Lapis obsidianus ..... 2348 



Selenite . . . . . . 2322 



Grindstone ...... 2142 



Salt 2130 



Sulphur, native ..... 2033 



Nitre ....... 2000 



Brick ....... 2000 



Plumbago I860 



Alum ....... 1720 



Asphaltum ...... 1400 



Coal, Scots . . . . . . 1300 



Newcastle . . . . . 1270 



Staffordshire ..... 1240 



Jet 1238 



Ice, probably ...... 930 



Pumice-stone ...... 914 



LIQUIDS. 



Sulphuric acid . . . . . . 1940 



Ph. London .... 1850 



Nitrous acid, Ph. London . . . . 1550 



Nitric acid . . . . . 1217 



Water of the Dead Sea .... 1240 



Sea Water 1026 



Muriatic acid . . . . . . 1194 



Water of the Seine, filtered . . 1001 



Naphtha 708 



CLASTIC FLUIDS. 



Kirwan. Lavoisier. 



Barometer, 30. Thermometer 



Sulphureous acid gas , *? - 26o 



Carbonic arid ga> . 1-500 '00176 



Nitrous iras . . 1'lUt 

 134 



