The American Journal of Science and Arts, Volumes 93-94S. Converse, 1867 - Science |
From inside the book
Results 1-5 of 100
Page 6
... seen that wave lengths may usually be determined correctly in the first decimal place when the corresponding line upon Kirchhoff's scale is known to the tenth of one millimeter . From Table I it will be seen that wave lengths as ...
... seen that wave lengths may usually be determined correctly in the first decimal place when the corresponding line upon Kirchhoff's scale is known to the tenth of one millimeter . From Table I it will be seen that wave lengths as ...
Page 17
... seen in place until we arrived at Fort James , about twelve miles below the mouth of Firesteel creek , a branch of James river . Erratic rocks of all sizes and texture were visible on the surface every where , more especially in the ...
... seen in place until we arrived at Fort James , about twelve miles below the mouth of Firesteel creek , a branch of James river . Erratic rocks of all sizes and texture were visible on the surface every where , more especially in the ...
Page 18
... seen in the west . About ten feet from the top of the rocks as seen at this locality , is a layer of steatitic material , mottled , gray and cream - color , very soft , about 12 inches thick , which is used sometimes for the manufacture ...
... seen in the west . About ten feet from the top of the rocks as seen at this locality , is a layer of steatitic material , mottled , gray and cream - color , very soft , about 12 inches thick , which is used sometimes for the manufacture ...
Page 19
... seen . It rests upon a gray quartzite , and there are about five feet of the same gray quart- zite above it , which have to be removed with great labor be- fore the Pipestone can be secured . About 300 yards from the Pipestone exposure ...
... seen . It rests upon a gray quartzite , and there are about five feet of the same gray quart- zite above it , which have to be removed with great labor be- fore the Pipestone can be secured . About 300 yards from the Pipestone exposure ...
Page 21
... seen that would lead one to suppose that the place had been visited for a longer pe- riod than fifty years . All the excavations could have been made within that time . There are many rude iron tools scat- tered about , and some of them ...
... seen that would lead one to suppose that the place had been visited for a longer pe- riod than fifty years . All the excavations could have been made within that time . There are many rude iron tools scat- tered about , and some of them ...
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alcohol ammonia analysis angles appear atoms axis beds boiling point carbon Carboniferous cavern cent characters chemical chlorid Coal-measures color comet compound containing copper Cretaceous crystals decomposed density deposits described determined diameter distillation earth Eocene ether ethyl examined fact feet formation formula fossils fractionated distillations Geinitz genera genus Geological give heat hydrochloric acid inches infusoria iron JOUR kaolin kaolinite latitude latter less light limestone liquid longitude mass mean meteoroids meteors method mica miles mineral Miocene nacrite nearly observed obtained orbit oxyd oxygen Paleontology Permian photosphere plane plates portion present probably Prof quantity ratio referred regard remarkable river rocks salt sandstone SCI.-SECOND SERIES seen shell silicic acid silicic ether silicium Silurian solar solution species specimens spot strata Substance sulphate sulphuric acid surface temperature thickness tion tube upper vapor weight XLIII