Bulletin of the United States Geological Survey, Volumes 45-52

Acad Agric ammonia analyses apatite Aquarii Bone phosphate bones C. U. Shepard calcareous Canada carbonate of lime carbonic acid Carboniferous Carolina Cephei chloride Clamp clay Clock fast CO₂ Constituents containing coprolites Cretaceous Cygni determined disturbed surface disturbing mass Draconis earth feet formation fossils Frontenac County Geol Geological Survey Geyser Grams per kilo guano Herculis 1.0 Hypothetical combination inches Jour kilo of water limestone London Magnesia marl material in solution miles mineral mines Name of star nodules Normal equation North Observer occur Ophiuchi Ottawa County Paleozoic Pegasi Permian phate phos phosphate bed phosphate of lime phosphatic deposits phosphatic nodules Phosphoric acid phosphorite precipitate Price 5 cents pyroxene region Report rock Saint Louis sand sea level sér shells Shumard siliceous Silurian sin² SiO2 strata Table Tertiary Texas thickness tion Trace Upware vein Weight Woodward