|
In my view, the Christian religion is the most important and one of the first things in which all children, under a free government ought to be instructed... No truth is more evident to my mind than that the Christian religion must be the basis of any government intended to secure the rights and privileges of a free people. Preface to 1828 Dictionary
|
SAND'STONE, n. [sand and stone.] Sandstone is, in most cases, composed chiefly of grains of quartz united by a cement, calcarious, marly, argillaceous, or even silicious. The texture of some kinds is loose, of others close; the fracture is granular or earthy.
A rock made of
sand more or less firmly united. Common or siliceous sandstone
consists mainly of quartz sand.
* Different names are applied to the various kinds of sandstone according to their composition; as, granitic, argillaceous, micaceous, etc. Flexible sandstone (Min.), the finer- grained variety of itacolumite, which on account of the scales of mica in the lamination is quite flexible. -- Red sandstone, a name given to two extensive series of British rocks in which red sandstones predominate, one below, and the other above, the coal measures. These were formerly known as the Old and the New Red Sandstone respectively, and the former name is still retained for the group preceding the Coal and referred to the Devonian age, but the term New Red Sandstone is now little used, some of the strata being regarded as Permian and the remained as Triassic. See the Chart of Geology. | ||||||||