Smithsonian Miscellaneous Collections, Volume 45

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Smithsonian Institution, 1903 - 11 páginas
 

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Página 168 - Institution, the income from a part of which was to be devoted to "the increase and diffusion of more exact knowledge in regard to the nature and properties of atmospheric air in connection with the welfare of man.
Página 171 - ... indicate that some of the theories upon which modern systems of ventilation are based are either without foundation or doubtful, and that the problem of securing comfort and health in inhabited rooms requires the consideration of the best methods of preventing or disposing of dusts of various kinds, of properly regulating temperature and moisture, and of preventing the entrance of poisonous gases like carbonic oxide, derived from heating and lighting apparatus, rather than upon simply diluting...
Página 172 - A determination of the ratio of the specific heats at constant pressure and at constant volume for air, oxygen, carbon-dioxide, and hydrogen.
Página 213 - Mathematics, mechanics, physics, chemistry, astronomy, meteorology (including terrestrial magnetism), mineralogy (including petrology and crystallography), geology, geography (mathematical and physical), paleontology, general biology, botany, zoology, human anatomy, physical anthropology, physiology (including experimental psychology, pharmacology and experimental pathology) and bacteriology. The...
Página 169 - Institution, which will be awarded annually or biennially, for important contributions to our knowledge of the nature and properties of atmospheric air, or for practical applications of our existing knowledge of them to the welfare of mankind.
Página 218 - So far as records show, this is one of the largest if not the largest group of its kind in existence.
Página 307 - ... exceeding one-half of the whole mass. The feldspar present is orthoclase, of various shades of pink, forming from one-fourth to perhaps one-third of the whole. The quartz is mainly white, but occasionally smoky; its isolated portions form but a small part, say one-fourth, of the mass; it is veined in structure, but this is probably not a constant character. Small grains of magnetite are scattered through the rock, but not so thickly as in many granites. No other ingredients have as yet been detected....
Página 100 - Alps, during the day in summer, much ice is melted and the water courses from the glaciers accumulate in brooks which, as they reach the crevasses, tumble down in rushing waterfalls, and are lost in the depths of the ice. Directed, however, by the form of the ice passage against the rocky floor of the valley, the water descends at a particular spot, carrying with it the sand, mud, and stones which it may have swept away from the surface of the glacier. By means of these materials it erodes deep pot-holes...
Página 219 - ... not prevail. The purpose of the excavations made at Lansing was to expose the formations containing the human remains so fully that geologists of all ways of thinking might study them to advantage, thus preventing the adoption of conclusions based on inadequate observations. The Leslie iron mine study has an interesting bearing on the technic and industrial history of the tribes. It has been a matter of much surprise, as...
Página 273 - Coll., vol.45, 1904, p. 273.— BASSLER, Bull. 292, US Geol. Surv., 1906, p. 12. Zoarium parasitic, consisting of very slender, tubular threads or stolons, arranged more or less distinctly in a radial manner. Surface of threads with a single row of small pores. These may be wanting locally, and vary considerably in the degree of their separation. Zocecia unknown, probably deciduous.

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