 | William Nicholson - 1809 - 726 страници
...descending, or continuing at any particular depth ; a water-gnage or barometer determined the depth of descent, a compass directed the course, and a ventilator...which was let into the wood, of which the body of the vessel was made, in such a manner, as to give its utmost support to the body of the vessel against... | |
 | Thomas Clark - 1814 - 244 страници
...descending, or continuing at any particular depth. A water,guage, or barometer, determined the depth of descent : a compass directed the course : and a ventilator...on the surface. " The entrance into the vessel was eliptical, and so small as barely to admit one person. This entrance was surTounded with a broad eliptical... | |
 | William Nicholson - 1819 - 426 страници
...descending, or continuing at any particular depth ; a water-gauge or barometer determined the depth of descent, a compass directed the course, and a ventilator...supplied the vessel with fresh air when on the; surface. Tlie entrance into the vessel was elliptical, and so small as barely to admit a person. This entrance... | |
 | John Mason Good - 1819 - 822 страници
...watcrsan¡re, or "barometer, determined the depth of descent, a compass directed the course, and a vcaf.lator within supplied the vessel with fresh air, when on the surface. The entrance into the vessel was elliptic»!, awl so email as barely to admita person. This entrance was surrounded with a broad elliptical... | |
 | Thomas Curtis (of Grove house sch, Islington) - 826 страници
...determined the depth of descent, a compass directed the course, and a ventilator within supplied tlie vessel with fresh air, when on the surface. The entrance...entrance was surrounded with a broad elliptical iron baud, the lower edge of which was let into the wood, of which the body of the vessel was made, in such... | |
 | Thomas Curtis - 1829 - 820 страници
...descending, or continuing at any particular depth. A water-gauge, or barometer, determined the depth of descent, a compass directed the course, and a ventilator...entrance into the vessel was elliptical, and so small аз barely to admit a person. This entrance was surrounded with a broad elliptical iron band, the... | |
 | Thomas Curtis (of Grove house sch, Islington) - 1839 - 854 страници
...|he «revM, three inches in length; a brass bandage is h ere- ib<;d, because leather is apt to thc course, and a ventilator within supplied the vessel...entrance into the vessel was elliptical, and so small LUS barely to admit л person. This The reservoir »(up. 4), applied in such a . "- ", r..r^J .".,./-,... | |
 | Edgar Stanton Maclay - 1893 - 714 страници
...descending, or continuing at any particular depth. A water-gauge or barometer determined the depth of descent, a compass directed the course, and a ventilator...the vessel with fresh air when on the surface. The skillful operator could swim so low on the surface of the water as to approach very near a ship in... | |
 | Edgar Stanton Maclay - 1893 - 662 страници
...descending, or continuing at any particular depth. A water-gauge or barometer determined the depth of descent, a compass directed the course, and a ventilator...the vessel with fresh air when on the surface. The skillful operator could swim so low on the surface of the water as to approach very near a ship in... | |
 | John Randolph Spears - 1897 - 460 страници
...descending, or continuing at any particular depth. A watergauge or barometer determined the depth of descent ; a compass directed the course, and a ventilator...vessel was elliptical, and so small as barely to admit one person. This entrance was surrounded by a broad elliptical iron band, the lower edge of which was... | |
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... forcing-pumps served to eject the water within, when necessary for ascending. At the top, there was likewise an oar, for ascending or descending, or continuing at any particular depth— A watergauge or barometer, determined the depth of descent,... 
