| | | 8. Fluorine, supposed to be a gas, is found with calcium | | | in teeth and bones, and weighs | 0 | 3 | 300 | | | 9. Silicon, a solid, found united with oxygen in the | | | hair, skin, bile, bones, blood, and saliva, weighs | 0 | 0 | 14 | | | 10. Magnesium, a metal found in union with phosphoric | | | acid in the bones | 0 | 2 | 250 | | | 11. Potassium, a metal, the basis of potash, is found | | | as phosphate and chloride; weighs | 0 | 3 | 340 | | | 12. Sodium, a metal, basis of soda; weighs | 0 | 3 | 217 | | | 13. Calcium, a metal, basis of lime, found chiefly in | | | bones and teeth; weighs | 3 | 13 | 190 | | | 14. Iron, a metal essential in the coloring of the | | | blood, and found everywhere in the body; | | | weighs | 0 | 0 | 65 | | | 15. Manganese. } Faint traces of both these metals | | | } | | | 16. Copper metals.} are found in brain and blood, | | | but in too minute portions to be given by | | | weight. | | | |------|-----|----- Total | 154 | 0 | 0 The second table gives the combinations of these elements; and, though a knowledge of such combinations is not as absolutely essential as the first, we still can not well dispense with it. The same weight--one hundred and fifty-four pounds--is taken as the standard. COMPOSITION OF THE BODY.