. Carnegie Institution of Washington publication. 424 Reports on Special Researches plates serve to exliibit, in a general way, how the cruises of the Galilee and the Carnegie have been carried out, not only with reference to the other chief expeditions, but also in the fulfilhnent of the object of securing, witliin a comparatively brief period, a systematic magnetic survey of ocean areas. On the homeward cruise of the Carnegie in 1916-1917 (see broken red lines, Pis. 23 and 24), additional data will be obtained. Figure 29 shows the corrections of the various magnetic-declination charts for ce
. Carnegie Institution of Washington publication. 424 Reports on Special Researches plates serve to exliibit, in a general way, how the cruises of the Galilee and the Carnegie have been carried out, not only with reference to the other chief expeditions, but also in the fulfilhnent of the object of securing, witliin a comparatively brief period, a systematic magnetic survey of ocean areas. On the homeward cruise of the Carnegie in 1916-1917 (see broken red lines, Pis. 23 and 24), additional data will be obtained. Figure 29 shows the corrections of the various magnetic-declination charts for certain portions of the Atlantic Ocean at the time Cruise I and the first part of II of the Carnegie were carried out. East magnetic dechnation being given the positive sign, a plus correction, for example, means that the chart-value of east magnetic dechnation was smaller and of west Nc U) YorK SI ^oKn'j .TOiJlou Cruise I, m Madeira 1909-10 Bermuda NEjUJ YorK. ,.'--- .. la -f 'â¢- - ⢠*,^ ⢠Il^- .-^' -r *1 ^^ ~--~^ ___ ^' -^ :=.=:::â 0° â¢f '^ -^ ... ^ -r â¢1 ^ ~ ^ - n° u , ^ ^ ~- ^ __ _ â ~- -- -1° -1 N ^ '' -f -â I ^ - â â " 0 iC WO Nautical miles 6000 90UU Cmse n, 1910-11 New YorK Vieques ran â â ââ - 1â a. .. n° 0 ^- "" * -^ N --â¢' -1° -1 â -.^ , ⢠^ ' 7° V n" u ^_,__^ ^ ^^^ -^ ^.,â- â â -1° -1 'V ^^ --' ~i ' \ ^â -^ -â >' n° u ^ - ^ ^ - ~ â * ^ -1° -1 ~ " N ^ -⢠N ^ " ** ^ _ â ?° .^ â ' >- _ _ ^ -^ - â -^ 00 5 3C 00 NauliCdl miles 6000 9C Rio de Janeiro Buenos Aires CapeToiun. gOocT" ' 12000 - Nautical milej 15OQO 18000 Fig. 29.âShowing Corrections of Magnetic-Declination Charts for the Atlantic Ocean, 1909-1911. (British Admiralty, -; United States Hydrographic Office, ; German , â¢) magnetic dechnation larger than the values observed on the Carnegie. The Carnegie's chief ports of call are shown, as also the distances in nautical miles traversed from
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Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1910, bookyear1917
