Annual of Scientific Discovery: Or, Year-book of Facts in Science and ArtGould and Lincoln, 1850 |
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Página 15
... rock . The four lengths of each of the twin tubes he proposed to have as follows : - from the Caernarvon abutment to the tower at high - water - mark , 274 feet ; from the latter tower to the central Britannia tower , 472 feet ; from ...
... rock . The four lengths of each of the twin tubes he proposed to have as follows : - from the Caernarvon abutment to the tower at high - water - mark , 274 feet ; from the latter tower to the central Britannia tower , 472 feet ; from ...
Página 68
... rock which forms the bed of the river . The present structure is 1,017 feet long , and is an improve- ment upon the old cribbing plan . It is built of solid timbers , 12 inch- es square , laid crosswise , one above another , with a ...
... rock which forms the bed of the river . The present structure is 1,017 feet long , and is an improve- ment upon the old cribbing plan . It is built of solid timbers , 12 inch- es square , laid crosswise , one above another , with a ...
Página 69
... rock excavated , since the work was first commenced . NEW SHIPPING - SIGNAL . A NEWLY invented apparatus for the prevention of collision at sea during foggy and thick weather , when lights and other methods now in use are altogether ...
... rock excavated , since the work was first commenced . NEW SHIPPING - SIGNAL . A NEWLY invented apparatus for the prevention of collision at sea during foggy and thick weather , when lights and other methods now in use are altogether ...
Página 73
... rock . This is accomplished by connecting each foundation - pile with a large disk of cast - iron , and the disk rest- ing on the surface , while the pile passes down through its centre 10 feet into the body of the rock , the two points ...
... rock . This is accomplished by connecting each foundation - pile with a large disk of cast - iron , and the disk rest- ing on the surface , while the pile passes down through its centre 10 feet into the body of the rock , the two points ...
Página 74
... rock selected for the site of the light - house is called the Outer Minot ; at extreme low - water an area of about 30 feet in diameter is exposed , the highest point being about 3 feet above low - water line . The rock is granite ...
... rock selected for the site of the light - house is called the Outer Minot ; at extreme low - water an area of about 30 feet in diameter is exposed , the highest point being about 3 feet above low - water line . The rock is granite ...
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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.