Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 388
rlishnian named Felix Booth.t Greek, isos = equal, gonia = angle; a = not, go7na = angle. LINES OF EQUAL DECLINATION OR LSOGONIC LINES 377 arc .subject to slow changes. At Loih1<ju, in 1580, tlie (leclina-tion was 11 17 E. This slowly d(;creased, until in 1G57 itwas 0° 0. After this it became… … Fi9. 458. —Isogenic Lines for Canada and the United States (January 1.1910).The data for regions north of latitude 55° 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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