English

Treasures of the earth

Illustrated by thirty-two reproductions from photographs and maps. Triumphs of Enterprise series. "An inspirational, simply-written text aimed primarily at the juvenile audience, and with chapters on general geology, coal, iron, precious and base metals, salt, clay & porcelain, stone, oil, and precious stones, p 240-64. The later seems largely derived from Church's Precious stones, and is accurately presented but with a minimal of technical matter and a maximum of romantic lore. Two plates show the Robert Victor diamond mine in South Africa and a table-full of diamonds being graded; several text figures show styles of gem cuts."-​-​Gemology by J. Sinkankas, entry no. 2681.

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