Annual of Scientific Discovery: Or, Year-book of Facts in Science and ArtGould and Lincoln, 1850 |
Dentro del libro
Resultados 1-5 de 79
Página 14
... passed to assist in raising them . The most important advantage to be derived from the peculiar arrangement exhibited in this structure was the practical test of the power of re- sistance of a counter - braced iron arch on a large scale ...
... passed to assist in raising them . The most important advantage to be derived from the peculiar arrangement exhibited in this structure was the practical test of the power of re- sistance of a counter - braced iron arch on a large scale ...
Página 15
... passing under it freely , 100 feet being the space required , and they also for- bade that any scaffolding or centring should be used . After much deliberation , Mr. Stephenson selected the plan of two cast - iron arches , which were to ...
... passing under it freely , 100 feet being the space required , and they also for- bade that any scaffolding or centring should be used . After much deliberation , Mr. Stephenson selected the plan of two cast - iron arches , which were to ...
Página 17
... passing between rollers , they are put under a stamping , or , as it is technically termed , a joggling - block , which , by repeated blows , renders their surface perfectly flat ; after which a series of holes , corresponding in size ...
... passing between rollers , they are put under a stamping , or , as it is technically termed , a joggling - block , which , by repeated blows , renders their surface perfectly flat ; after which a series of holes , corresponding in size ...
Página 18
... passing over a pulley attached to one of the uppermost plates , is rap- idly raised , until the holder - up is enabled by pincers to grasp the fiery iron , which , on being inserted into its hole , he then instantly , as be- fore ...
... passing over a pulley attached to one of the uppermost plates , is rap- idly raised , until the holder - up is enabled by pincers to grasp the fiery iron , which , on being inserted into its hole , he then instantly , as be- fore ...
Página 19
... passed through holes , made for the purpose , to the boy , who delivers them to the holder - up , and he in turn drives them through rivet - holes to the outside , where they are also pounded , so as to form a head there . It is ...
... passed through holes , made for the purpose , to the boy , who delivers them to the holder - up , and he in turn drives them through rivet - holes to the outside , where they are also pounded , so as to form a head there . It is ...
Otras ediciones - Ver todas
Términos y frases comunes
Academy action Agassiz American ammonia animal apparatus appearance ascer Athenæum atmosphere bituminous coal boiler bones Boston carbon carbonic acid cent chemical chloroform coal coast color connected containing copper crystals cylinder deposits diameter discovered discovery distance effect electric engine evaporation examination experiments fact feet flour fossil glass goitre gold gun-cotton gutta-percha heat inches invention iron island Journal Kilauea kyanized Lake Lake Superior length light lime liquid London longitude machine magnesia magnetic manufacture mass matter means meerschaum metal miles nearly nitric acid observations obtained oxide paper passed patent phenomena plant plates portion pounds present principle produced Prof Professor proportion quantity R. I. Murchison recently remarkable river rocks salt Science scientific solution species specimens square miles steam substance sugar sulphuric acid surface temperature thickness tion tons tube vessel weight whole wires zinc
Pasajes populares
Página 355 - Mayne, like a shewer from the South to the North, and from the North to the West, and then downe to the South againe.
Página 237 - We found the pillar to be of solid salt, capped with carbonate of lime, cylindrical in front and pyramidal behind. The upper or rounded part is about forty feet high, resting on a kind of oval pedestal, from forty to sixty feet above the level of the sea. It slightly decreases in size upwards, crumbles at the top, and is one entire mass of crystallization.
Página 5 - WASHINGTON STREET, BOSTON, ANNUAL OF SCIENTIFIC DISCOVERY ; or, Year Book of Facts in Science and Art, exhibiting the most important Discoveries and Improvements in Mechanics, Useful Arts, Natural Philosophy, Chemistry, Astronomy, Meteorology, Zoology, Botany, Mineralogy, Geology, Geography, Antiquities, etc.
Página 147 - Sometimes it will be more convenient to arrange the two charts in symmetrical positions, one to the left and the other to the right of the subject's median plane, and with a slight inclination toward this plane.