Diamonds and precious stones, a popular account of gems .. (1874)
Dieulafait, Louis, b. 1830, Sanford, Fanchon, tr · New York, Scribner, Armstrong, and Company · leaf 29
cognized at a great dis-tance, even by inexperienced eyes. Being depositedin water in parallel layers, they have preserved thesame disposition after being left dry. Sometimes,indeed, the horizontal layers have been singularlydisplaced from their original direction : suddenchanges and movements of… … Fig. 3.—Structure of Sedimentary Rocks. example of sedimentary rock, and it shows verydistinctly the regularity of structure which theserocks usually display. Beyond this general distinction there is another, GEOLOGICAL POSITION. less prominent perhaps, but quite as definitelymarked. The remains of…
Precious stones · Diamonds · Gems
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