Magnetic observations in Southeast China

The following magnetic observations are extracted from the “Atlas du Haut Yang‐tse‐kiang,” by the Rev. F. S. Chevalier, late Director of the Zi‐ka‐wei Observatory. The declination and the horizontal intensity were determined with a magnetometer of the Kew pattern, by Elliott, No. 49, and the azimuth of the mark observed with a theodolite by Brunner. The dip circle used is a Dover make. The observations were made from May, 1897, to April, 1898, and reduced to January 1, 1898, by comparison with the Zi‐ka‐wei Observatory. To be sure, several of the stations were somewhat too far from the observatory for this purpose, but no other course was possible, Some of the results—for instance, those for Han‐kau—are the means of several observations taken at different times, and which were found to agree well. At other places—e. g., Wu‐hu—observations were also taken several times, but they happened not to agree and have therefore been omitted. The cause was afterwards ascertained to have been the proximity of a heap of old tin boxes. The declination in Chin‐kiang is much greater than could have been expected, but there is no reason to doubt the observations, which agree very well.