Henderson, C. Hanford (Charles Hanford), 1861-1941, Woodhull, John F. (John Francis), 1857-1941 · New York, D. Appleton and company · leaf 240
Fig. 121.—Northern Hemisphere. TABLE OF MAGNETIC DECLINATION, INCLINATION, ANDINTENSITY FOE 1900- Declination. Dip. Intensity relative tothat of New York. New York 9° 12 W. 4° 35 W.16° 42 E.29° 24 W.16° 16 W.14° 30 W. 9° 30 W.10° 0 W. 0° 30 E. 70° 6 N.70° 18 N.62° 20 N.58° 2 S.67° 9 N.64° 55 N.66°… … Fig. 122.—Southern Hemisphere. The declination, dip, and intensity are all graduallychanging. The following table exhibits the change indeclination at London for three hundred years : d. 1580 .... II3 17 E. A. D. 1816 ... 24° 30 W. 1622 ... 6° 12E. 1868 .... 20° 33 W. 1657 .... 0° 0 1880 .... 18°…
Physics
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