...During this process the animal matter of bonesor other objects would disappear and its placebe taken by lime or silica, and thus would beformed a layer of rock containing fossils... 
Frederic A. Lucas 「Animals of the Past」
...This gritty,insoluble silica is especially noticeable among the horsetails (Equisetacæceæ),bamboos, and sedges...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...376, and contain 57 percent of silica with carbonates of iron and magnesia, organic matter, and tracesof iron...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...122, and there was 79 to 85 per cent of carbonate of lime together withcarbonate of magnesia, and iron, silica, and organic matter...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Others are almostexclusively made of silica...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...This agent issecreted in the urine in the form of silicate of potash and is thrown down asinsoluble silica when a stronger acid displaces it by combining with the potashto its exclusion...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...of silica, 40 of alumina, and 13of water...
Richard Glazier 「A Manual of Historic Ornament」
...If soils were composed of nothing but pure silica sand, nothing wouldever grow; but in Nature we find that soils contain all sorts of mineralmatter, and chief amongst these is lime...
Various 「Argentina From A British Point Of View」
...One part of silica heated to whiteness with three parts of baryta,yields a pale green solid mass, permanent, but deficient in colour whenground...
George Field 「Field's Chromatography」
...A mixtureof lime and clay, a tufaceous deposit, and an apparently recent depositof soapstone, containing a variety of substances, as alumina, silica,lime, soda, magnesia, and iron...
Charles Sturt 「Expedition into Central Australia」
...25 Rock composed principally of silica and alumen forming sandstone...
Charles Sturt 「Expedition into Central Australia」
ランダム例文：
hostess altruism storeys
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