A Manual of Scientific Enquiry: Prepared for the Use of Officers in Her Majesty's Navy; and Travellers in GeneralJohn Frederick William Herschel, Robert Main |
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Page xi
... stream or surface - drift , 21- Approaching a coast , 25 Observations in port , 30 Survey of a port , 31 Sailing directions , 36 Tide pole , 36— Soundings , 37- The Bore , 39- Freshes , 40 — Dis- covery of land , 40- Sailing along a ...
... stream or surface - drift , 21- Approaching a coast , 25 Observations in port , 30 Survey of a port , 31 Sailing directions , 36 Tide pole , 36— Soundings , 37- The Bore , 39- Freshes , 40 — Dis- covery of land , 40- Sailing along a ...
Page xiv
... streams , 200 - Nature of the observations to be made on rivers , 201 Springs , 202 - Lakes , 203 - Lagoons and marshes , 203 - Line of coast , 204 - Oceans , islands , rocks , shoals , & c . , 205 -Tides , storms , tempests , & c ...
... streams , 200 - Nature of the observations to be made on rivers , 201 Springs , 202 - Lakes , 203 - Lagoons and marshes , 203 - Line of coast , 204 - Oceans , islands , rocks , shoals , & c . , 205 -Tides , storms , tempests , & c ...
Page 17
... streams in contact , but flowing in opposite directions , and having a temperature differing 10 or 12 degrees from each other , and yet pursuing their opposite courses for upwards of a thousand miles ; and according as a vessel is ...
... streams in contact , but flowing in opposite directions , and having a temperature differing 10 or 12 degrees from each other , and yet pursuing their opposite courses for upwards of a thousand miles ; and according as a vessel is ...
Page 19
... stream ; the Trade - wind drift ; the Guinea and Equatorial current ; the By means of self - registering thermometers , properly set and care- fully lowered and as carefully hauled in ( without jerks ) . + See Humboldt on the Climate of ...
... stream ; the Trade - wind drift ; the Guinea and Equatorial current ; the By means of self - registering thermometers , properly set and care- fully lowered and as carefully hauled in ( without jerks ) . + See Humboldt on the Climate of ...
Page 20
... stream , will be most acceptable . 6. In passing through any of these great currents , the observer should carefully define the extent of the belt of moving water at the parallel in which he crossed it ; the limit of the eddy on either ...
... stream , will be most acceptable . 6. In passing through any of these great currents , the observer should carefully define the extent of the belt of moving water at the parallel in which he crossed it ; the limit of the eddy on either ...
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A Manual of Scientific Enquiry: Prepared for the Use of Officers in Her ... John Frederick William Herschel No preview available - 2017 |
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actinometer afford altitude angles animals ascer ascertained atmospheric wave azimuth barometer Cape Horn carefully centre character chronometer circle coast colour column coral correct currents deflection deflector depth desirable determined dipping needle direction distance earth earth-wave earthquake Edition especially Fcap fissures fossil geographical geology height high water horizontal igneous rocks important inches inclination inquiry instrument islands known land latitude longitude lunitidal interval magnetic force magnetic moment maps means measure mercury meridian Mineralogy minerals minute moon's transit nature navigation needle noted objects observations obtained occur ocean origin phenomena port portion position possible Post 8vo preserved quadrupeds racter reefs remarks rivers rocks scale seismometer sextant shells ship shock shore skin specimens stations strata stream surface taken temperature thermometer tide tide-wave tion tribe tube vernier vertical vessel vibration Vols voyage wind Woodcuts zodiacal light
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Page 93 - ... and if the amount is large, the heeling error is corrected by the application of a vertical magnet. The whole process is described, and all the mathematical formula and arithmetical processes, and a number of convenient graphic methods, are given in the "Admiralty Manual for ascertaining and applying the Deviations of the Compass caused by the Iron of a Ship.
Page 76 - Mistakes and errors have often been produced in tide observations by supposing that the turn of the tide-stream is the time of high water. But this is not so. The turn of the stream generally takes place at a different time from high water, except at the head of a bay or creek. The stream of flood commonly runs for some time, often for hours, after the time of high water. In the same way, the stream of ebb runs for some time after low water.