] 



The first three officers invited to join the scheme were : the late 

 Lieutenant General Sir J. H. Lef roy, the late Lieutenant- General 

 F. M. Eardley Wilmot and Major-General C. J. B. Riddell. These 

 were soon followed by the late General W. J. Smythe, Lieutenant- 

 General C. Younghusband, Major- General H. Clerk, and the late 

 Lieutenant- Colonel H. F. Strange. The naval expedition was placed 

 under the command of Captain (afterwards Sir James Clark) Ross. 



The observatories began their work in 1840. The first publication 

 was a 4to. volume of observations on days of unusual magnetic dis- 

 turbance, published in 1843, which was followed by a second, on the 

 same subject, in 1851. 



The subsequent publications are dated as follows : — 



Toronto to 1842, Vol. t 1845. 



to 1845, Vol. it 1853. 



.. to 1847, Yol. IIT. 1857. 



„ The observations from 1848 to 1853 



remain in MS. 



St. Helena to 1843, Yol. I. 1850. 



, to 1849, Yol. II. 1860. 



Cape of Good Hope, magnetic. . to 1846, Yol. T. 1851. 



„ meteorological to 1848, Yol. II. 1880. 



Hobarton, Tasmania to 1842, Yol. £ 1850. 



„ Vol. II. 1852. 



„ Vol. lit 1853. 



Sir E. Sabine was enabled to complete this enormous amount of work 

 by the fact that for upwards of twenty years a clerical establishment 

 was maintained by the War Office at Woolwich, under his own special 

 control. 



From these official publications, we pass to Magnetic Surveys. 

 Sir E. Sabine lived to complete in fifteen " Contributions " to the 

 * Philosophical Transactions,' a gigantic work undertaken by him, 

 namely, a survey of the general Distribution of Magnetism over the 

 Globe at this epoch. Several of these appeared after he had lost the 

 aid of his establishment of clerks, the last in 1876. In these are to be 

 found every observation of any authority, taken by sea or land, since 

 1818, or thereabouts, arranged in zones of 5° and 10° of latitude, and 

 taken in the order of longitude eastward from Greenwich round the 

 globe. All the results of Arctic and Antarctic voyages, and special 

 expeditions were utilised. Everything that he could glean from 

 Russian, German, American and other foreign sources, much of which 

 is not accessible in any other form ; and these were accompanied by 

 maps prepared for him in the Hydrographical Department of the 

 Admiralty, under the supervision of Captain (subsequently Sir) 

 Frederick Evans, R.N. It may be safely said that had Sir E. Sabine 



