NUMBERS AND MEASURES. 



15 



Emerald 27 



Emery 4 



Ether (C 2 H 5 ) 2 0716 



Felspar 2'4-2'6 



Fluorspar 3'2 



Galena 7 "6 



Garnet 3'5-4'2 



Glass (green) 2 '64 



Glass (crown) 2*5 



Glass (flint) 3-3'6 



Glass (Faraday's) 4 '36 



Glycerin 1'26 



Gold alloy, 18 carat ..14'88 



Gold alloy, mint 17'49 



Granite 2*7 



Graphite 2'2 



Gutta percha C'97 



Gypsum 2'33 



Heavy spar 4*5 



Hematite 5'07 



Horn-silver 5 '6 



Human body (mean)... 1*07 



Iceland spar 2 '7 



India-rubber 0'99 



Idocrase 3*4 



Iron (cast) 7'2 



Iron (wrought) 779 



IronfWootz) 7'665 



Iron (steel) 779 



Ivory 1-92 



Lard 0'94 



Lapis Lazuli 2'4 



Lignum vitse 1*3 



Mahogany 0'56'85 



Malachite 3 '9 



Marble 27 



Mica 27-3-1 



Milk (cows') 1-03 



Oak 0-69--99 



Oil (olive, sperm, colza) 0'915 ? 

 Opal 1-9-2-3 



Pearl ..27 



Petroleum 0'84-'878 



Pine-wood 0'56 



Porcelain (China) 2 '38 



Porcelain (Berlin) 2 '3 



Porcelain (Sevres) 2'15 



Porphyry 2'6-2'9 



Pyrites (iron) 5 



Pyrolusite 4 '9 



Pumice stone 2'2~2'5 



Ruby 



3-6-4 



Sand (dry) 1'42 



Sea-water 1'026 



Selenite 2'3 



Serpentine 2*6 



Silver (mint 925 fine) .10 '38 



Slate 2-1-2-8 



Spermaceti... 0'94 



Starch 1'53 



Strontianite 3'6 



Sugar (cane) 1'6 



Suet 0-92 



Talc 2-5 



Teak (Indian) 0*8 



Tinstone 6'9 



Topaz 3-6 



Tourmaline 2'9-3'3 



Trachite 275 



Turpentine 0*87 



Wax (bees') 0'96 



Willow-wood 0*4 



Witherite 4'3 



Wool 1-61 



Zinc blende..., ... 4'16 



