PT - JOURNAL ARTICLE AU - Schott, Charles A. TI - Abstract of results from a new discussion of the secular change of the magnetic declination in the United States, and some adjacent places in North and Central America AID - 10.2475/ajs.s3-9.49.25 DP - 1875 Jan 01 TA - American Journal of Science PG - 25--36 VI - s3-9 IP - 49 4099 - http://www.ajsonline.org/content/s3-9/49/25.short 4100 - http://www.ajsonline.org/content/s3-9/49/25.full SO - Am J Sci1875 Jan 01; s3-9