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 23
... rise and fall of the water in its immediate locality . As our space does not admit of further detail , I shall leave the subject in the hands of the observer with a remark which , whilst it will put him in possession of what kind of ...
... rise and fall of the water in its immediate locality . As our space does not admit of further detail , I shall leave the subject in the hands of the observer with a remark which , whilst it will put him in possession of what kind of ...
Page 24
... rise or fall of the water by the shore , and in the other that the water rises and falls con- siderably without there being any apparent motion of the stream . Such phenomena are highly curious , and worthy of all the attention that can ...
... rise or fall of the water by the shore , and in the other that the water rises and falls con- siderably without there being any apparent motion of the stream . Such phenomena are highly curious , and worthy of all the attention that can ...
Page 26
... rise above the horizon ; that all remarkable objects by which it may be recognised and by which the position of any port or other locality may be known , either at a distance when the weather is clear , or close in when haze or mist ...
... rise above the horizon ; that all remarkable objects by which it may be recognised and by which the position of any port or other locality may be known , either at a distance when the weather is clear , or close in when haze or mist ...
Page 36
... rise at springs and neaps , the low - water standard of the port , & c . , and the variation of the compass ; point out the best watering - places , and let all bearings given be magnetic , and noted as such . Port regulations and ...
... rise at springs and neaps , the low - water standard of the port , & c . , and the variation of the compass ; point out the best watering - places , and let all bearings given be magnetic , and noted as such . Port regulations and ...
Page 38
... rising and falling . In a country subject to earthquakes , carefully watch the tide - pole during and after the shock ; and if any undu- lations of the water are observed , note them , and the direction whence they proceed . Be careful ...
... rising and falling . In a country subject to earthquakes , carefully watch the tide - pole during and after the shock ; and if any undu- lations of the water are observed , note them , and the direction whence they proceed . Be careful ...
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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 iii - It is the opinion of the Lords Commissioners of the Admiralty, that it would be to the honour and advantage of the Navy, and conduce to the general interests of science, if new facilities and encouragement were given to the collection of information upon scientific subjects by the officers, and more particularly by the medical officers, of Her Majesty's Navy, when upon foreign service...
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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.