... form our gun-flints, a Chalcedonic variety of Silica. 5C Amadue, or German tinder. 81 Fossil shells ... have endured it. 37 A general name for Silica, Flint, or Quartz, and the several varieties. 38 ...

... SUPPLIES. sodium, potassium, magnesium, and calcium, together with silica, alumina, and iron, in some form of combination. ... principal in- gredients to be searched for are silica, alumina, lime, iron, magnesia, potash, soda, chlorine, carbonic ...

... different calculi they found a small quantity of silica. The animal matter which serves as a cement ... phosphate of magnesia. 6. Carbonate of lime. 7. Silica ? 8. Cystic oxide. 9. Xanthic oxide. 10. Colouring ...

... or extractive matter, and sometimes a trace of silica and fluoride of calcium, with floating vesical mucus. ... lime together, and 1 of lithic acid. The silica and fluo- ride of calcium admitted as ingredients ...

... by various collaborating laboratories on your standard free silica sample S¥-2. Very truly yours, Pope A. Lawrence, ... Director and Mr. George G. Richards Re: Free Silica Standard Sample SM-2-VI — Dear Collaborator: Enclosed ...

... rock mining or non- radioactive-ore constituents, including silica dust. Furthermore, the mean cumulative radiation dose of ... rock mining or nonradioactive-ore constit- uents including silica dust. The finding of an excessive occurrence of ...

... project. Initially atmospheric concentrations of radon were measured; silica dust concentra- | tions were determined; and gamma radiation ... FINDINGS Environmental surveys have shown potential hazards from silica dust, and from radon and radon decay products ...

... respiratory con- tact with three different types of silica com- pounds, namely, inorganic crystalline or amor- phous ... and cats were exposed to the inhalation of silica dust (Campbell; Vorwald and Karr; Willis and Brutsaert). ...

... Findings Environmental surveys have shown potential hazards from silica dust, and from radon and radon decay products ... major potential hazards have been identified as airborne silica, uranium, vana- dium, acids, and alkalis. Build-up ...

... urine and sweat. A very small quantity of silica exists, according to Berzelius, in the urine, and, ... with small quantities of iron, soda, lime, and silica. Insoluble residue of the food (chiefly starch, grains, ...