II . Results of the monthly observations of magnetic dip, horizontal force, and declination made at the Kew Observatory from April 1869 to March 1875 inclusive

This paper, containing the result of six years’ magnetic observations at the Kew Observatory, follows as the third of a series of publications, the first of which was a communication to the Royal Society by General Sir E. Sabine, published in the Philosophical Transactions for 1863, page 273, which consisted of a discussion of certain selected magnetic disturbances, a general discussion of declinational changes as recorded by the magnetographs, and a discussion of the absolute determination of Dip and Horizontal Force at the Observatory, for the six years April 1857 to March 1863 inclusive.