Gravity

— Table of the Specific gravity of several Solid and Fluid bodies. | Platina | 23400 | | Fine gold | 19640 | | Standard gold | 18888 | | Quick silver | 11325 | | Fine silver | 11091 | | Standard silver | 10535 | | Copper | 9000 | | Copper halfpence | 8915 | | Gun metal | 8784 | | Cast bra | 8000 | | Steel | 7850 | | Iron | 7645 | | Cast iron | 7425 | | Tin | 7320 | | Crystal gla | 3150 | | Marble | 2700 | | Common green gla | 2600 | | Flint | 2570 | | Common stone | 2520 | | Clay | 2160 | | Brick | 2000 | | Common earth | 1984 | | Nitre | 1900 | | Ivory | 1825 | | Brimstone | 1810 | | Solid gunpowder | 1745 | | Sand | 1520 | | Coal | 1250 | | Boxwood | 1030 | | Sea water | 1030 | | Common water | 1000 | | Oak | 925 | | Gunpowder, close stacken | 937 | | Do. in loose heap | 836 | | Ash | 800 | | Maple | 755 | | Elm | 600 | | Fir | 550 | | Charcoal | | | Cork | 240 | | Air | 1.232 | The several sorts of wood are supposed dry. This table also contains the weight of a cubic foot of each body in avoirdupois ounces; from whence results the following rules: 1. To find the magnitude of any body from its Weight. As the tabular specific gravity of the body, Is to its weight in avoirdupois ounces. So is one cubic foot, or 1728 cubic inches, To its contents in feet or inches respectively. 2. To find the weight of a body from its magnitude. As one cubic foot, or 1728 cubic inches, Is to the content of the body, So is the tabular specific gravity To the weight of the body.