WEIGHTS AND MEASURES. 



363 



SPECIFIC GRAVITY OF VARIOUS SUBSTANCES 



(Trautwinh.) 



Aluminum 



Anthracite, i. 3-1. 84, usually 



" broken, of any size, loose 



(A ton, loose, averages from 40 to 43 cubic feet.) 

 Ash, American white, dry 



" "■ " perfectly dry 



Asphaltum, 1-1.8 



Boxwood, dry 



Brass (copper and zinc) cast, 7.8-8.4 



Bronze (copper 8 parts, tin i part, gun metal), G.4- 

 8.6 



Cement, English Portland 



Charcoal, of pines and oaks 



Cherry, perfectly dry 



Chestnut, perfectly dry 



Coal, bituminous 1.2-1.5 



broken, of any size, loose 



(A ton occupies from 43 to 48 cubic feet.) 



Copper, cast, 8.6-8.8 



Cork ,. 



Coke, loose, of good coal 



vA ton occupies 80 to 97 cubic feet.) 



Elm, perfectly dry 



Fat 



Glass, 2.5-3.45 



Gold, cast, pure 



Gravel, about the same as sand, which see. 



Hemlock, perfectly dry 



Hickory, perfectly dry 



Ice, .gi7-.922 



India rubber 



Iron, cast, 6.9-7,4. ° 



Lard 



Lead, ii.38-ii..i7 



Lime, quick ... 



" " ground loose, ^er struck bu. 62-72 lbs.. 

 Limestone and marbles 



Mahogauy, S, ,anish, dry 



Maple, dry . . '. 



Mercury, at 6o*> F 



Oak, white, perfs-tly dry, .66-.88 



Average 

 Specific 

 Gravity. 



Average 

 Weight 01 

 I cu, foot, 

 in Pounds. 



2.6 

 15 



.61 

 •752 

 1-4 



.96 

 8.1 



8-5 



.672 

 .66 



8.7 

 ■25 



.56 

 .93 



19.258 



162. 

 93-5 

 52-56 



38. 

 47- 

 83-3 



60. 

 504- 



529- 



81-103 



J 5 10 



42. 



41. 



84. 



47-52 



542. 



I5-J 

 23-32 



S1204. 



48- 



