Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 388
ealthy Englishman named Felix Booth,tGreek, igos = equal, gonia = angle; a = not, gonia = angle. LINES OF EQUAL DECLINATION OR ISOGONIC LINES 877 are subject to slow changes. At London, in 1580, the decHna-tion was 11° 17 E. This slowly decreased, until in 1G57 itwas 0° 0. After tliis it became… … Fig. 458. -Isogonic Lines for Canada and the United States (Janviary 1,1910).The data for regions north of latitude 5.5° are very meagre and discordant; the regions west ofHudson Bay where recent determinations have been made show considerable local disturbance;the lines north of latitude 70° are…
Physics
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