Great Britain. Admiralty. wig Ta {0 P| Observations on days of unusual magnetic disturbance made at the British colonial observatories, under the departments of ordnance and admiralty. Printed under the superintendence of Edward Sabine. 1840= 44, Lond, Longmans. 1843, 51. 2 v. 4°.
Sabine, Edward, ed. aS “Ma getism.