paper shale

Petrol.: A shale in which the lamination is so fine that the lam inæ can be separated as thin as paper, from thirty to forty having been obtained in one inch. paper-spar, s. [SLATE-SPAR.] and sheep. Some are medicinal, some furnish dyestuff, gum, and timber, many are narcotic, and some poisonous. The sub-order is divided into seven tribes, Podalyriee, Lotese, Viciese, Hedysareæ, Phaseoleæ, Dalbergiese, and Sophoree. The second, fourth, and fifth have sub-tribes, those of Hedy sarese are Arachidee, Coronillee, and Hedysarete proper. Known genera 295, species 4,700, scattered over the world, a large number in the north tem