Collier's New Encyclopedia

A complete general encyclopedia of 1921 — the world as it was understood just after the Great War, from Aachen to Zwingli, across twelve volumes and six thousand pages.

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Oolite

in petrology, a variety of limestone, composed of grains, like the h has usually roe of a fish, each of which has us a small fragment of some organism or a grain of a mineral as a nucleus, around which concentric layers of calcareous matter have accumulated. In geology and palæontology, the term is not now portant being the Olifant from the right.

The Limpopo has been ascended 50 miles by steamboat; but its upper reaches are obstructed by rapids and falls. the province of North Brabant. It con-

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