a. (UN-1 7.)

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1833–4.  J. Phillips, Geol., in Encycl. Metrop. (1845), VI. 702/1. The exterior of most uncrystalline rocks … seems to be slowly eaten away.

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1875.  Ruskin, Fors Clav., lx. 329. Such uncrystalline termination must now happen to all my work.

3