earth. 1

Thee are.'] powdery part of the crust of the globe. It is mainly made up of. the following elements: 50 per cent, oxygen, 25 per cent, silicon, 7 per cent, aluminium, 5 per cent, iron, 3 per cent. calcium, and 2 per cent, each of magnesium, sodium, and pota ium, alkaline e. Lime, baryta, strontia, and magnesia; so called on account of their earthy character and alkaline properties. e. closet. An apparatus used as a subnective ti ue d. D. of the surfaces of the body, due to localized anomalous outgrowth of connective ti ue, neurotic d. D. due to disturbance of the trophic nervous mechanism, progre ive muscular d. A general term for progre ive muscular atrophy, pseudo hypertrophic paralysis, and some allied affections. [Gr., dys, difficult, + trephein, to nourish.]