G R A 



8. To determine the magnitude of an irregular solid, and the capacity 

 of an irregular vessel. 



(j) Weigh the solid in air, and water ; then since a cubic foot of rain 

 water weighs 1000 ounces, 



lOOOoz. C weight lost!: I cubic foot ! magnitude required. 



CU) Weigh the vessel when empty, and full of water, and you have the 

 Weight of water it contains, then 



1000 oz. : weight of water ; I 1 cub. foot '. capacity required, 



(jjj) To determine the diameter of any small sphere, whose spec, grav. 

 Is s, its weight in grains (w) being known 



5 = 1.9612 V-. 



TABLE OF SPECIFIC GRAVITY. 



Extracted from Doxies, Lavoisier, Young, and other authentic sources. 

 Note. Water at 60 is assumed 1000 specific gravity. 



MINERAL PRODUCTIONS. 



Platina, purified ..... 19500 



hammered ..... 20336 



Pure gold, east . . . . . . 19255 



hammered .... 19361 



Mercury 13568 



Lead, cast ....*.. 11352 



Silver, pure, cast , - . . . 10474 



hammered . -. . 10510 



Bismuth, cast ..... 9822 



Copper, cast ...... 8788 



wire 8878 



Brass, cast ...... 8395 



wire ...... 8544 



Cobalt, cast ...... 7812 



Nickel, cast ...... 7807 



Iron, cast . . . . . .. 7207 



bar . . . . . . 7788 



Steel, hard, not screwed .... 7816 



soft, not screwed .... 7833 



Loadstone ...... -1800 



Tin, cast 7291 



Zinc, cast 7190 



Antimony, cast . . . . ^71^ 

 MB 



