 | American Association for the Advancement of Science - 1871
...commonly used are liable to be obstructed by ice. A strong iron tube, about four inches in diameter, is firmly bolted to a wharf or pile. It is open at the...glycerine. The parts above described insure protection from floating ice, and prevent congelation within the iron tube. A copper tube, about three inches... | |
 | American Association for the Advancement of Science - 1871
...commonly used are liable to be obstructed by ice. A strong iron tube, about four inches in diameter, is firmly bolted to a wharf or pile. It is open at the...glycerine. The parts above described insure protection from floating ice, and prevent congelation within the iron tube. A copper tube, about three inches... | |
 | American Association for the Advancement of Science - 1871
...height of the tide at stations where the float and box commonly used are liable to be obstructed by ice. of the tube being sufficient to allow the elastic...glycerine. The parts above described insure protection from floating ice, and prevent congelation within the iron tube. A copper tube, about three inches... | |
 | 1871
...end a nipple to which an India-rubber bag is fastened, — the length of the tube being sutficient to allow the elastic bag to be always submerged at...glycerine. The parts above described insure protection from floating ice, and prevent congelation within the iron tube. Near the upper end of the outer tube,... | |
 | PROFESSOR J. E. IIILGARD - 1875
...him an "Arctic tide-gauge," is in use at Boston, and has compared well with the ordinary float-gauge. It consists of a strong iron tube, about four inches...above described insure protection against floating ice^ and prevent congelation within the iron tube. A copper tube about three inches in diameter, closed... | |
 | Smithsonian Institution. Board of Regents - 1875
....is filled with ,glycerine, which is poured in at the top of the tube. When in this con- j* dition the glycerine rises and falls within the iron tube...height and pressure of the column of water above the rub- g ber bag, the difference in the height of the two columns being in proportion to the difference... | |
 | American Association for the Advancement of Science - 1877
...pulley, and from this a chain leads horizontally to the traversing platform that holds the pencil. The glycerine rises and falls within the iron tube,...the specific gravity of the water and the glycerine. A mixture of pure glycerine, and an equal quantity of water congeals at about fifty-seven degrees below... | |
 | American Association for the Advancement of Science - 1877
...pullej-, and from this a chain leads horizontally to the traversing platform that holds the pencil. The glycerine rises and falls within the iron tube,...difference of the specific gravity of the water and the gtycerine. A mixture of pure glycerine, and an equal quantity of water congeals at about fifty-seven... | |
 | Smithsonian Institution. Board of Regents - 1875
...him an "Arctic tide-gauge," is in use at Boston, and has compared well with the ordinary float-gauge. It consists of a strong iron tube, about four inches...above described insure protection against floating ice, and prevent cougelation within the iron tube. A copper tube about three inches in diameter, closed... | |
 | Smithsonian Institution. Board of Regents - 1875
...Batchelder, of Boston, and called by him an "Arctic tide-gange," is in use at Boston, and has coniparefl well with the ordinary float-gange. It consists of...above described insure protection against floating ice, and prevent congelation within the iron tube. A copper tube about three inches in diameter, closed... | |
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A strong iron tube, about four inches in diameter, is firmly bolted to a wharf or pile. It is open at the top, and has at the lower end a nipple to which an India-rubber bag is fastened, — the length of the tube being sufficient to allow the elastic... 