William Sturgeon. 273 



' 44. On some peculiarities in the magnetism of ferru- 

 ginous bodies. — Manchester Memoirs for 1845. 



' 45. On a peculiar source of deterioration of the powers 

 of magnetic bars. Read before the Royal Society, May 



1845. 



' ^6. On the electro-culture of farm crops. — Transactions 

 of the Highland Agricultural Society. 



' 47. An experimental investigation of the magnetic cha- 

 racters of simple bodies, metals, metallic alloys, and metallic 

 salts. — Memoirs of Manchester Literary and Philosophical 

 Society y 1846. 



' 48. Three accounts of the aurora borealis ; and on the 

 formation of clouds as observed in the locality of Kirkby 

 Lonsdale. — Memoirs of Manchester Literary and Philoso- 

 phical Society, vol. viii. 



' 49. On lightning and lightning conductors March 2 1 , 

 1848. 



' 50. On the peculiarities of the thunder-storm which oc- 

 curred in this neighbourhood on July 18 last; posthumous 

 paper, date uncertain. — Manchester Lit. and Phil. Soc, read 

 March 4, 1856. 



* Mr. Sturgeon has also published two elementary 

 treatises, one on electricity, the other on galvanism, besides 

 some smaller works, the last of which was entitled " Practical 

 Instructions for the Protection of Persons and Property 

 from the Effects of Lightning." 



' For a set of improved electro-magnetic apparatus, Mr. 

 Sturgeon received, in 1825, the large silver medal of the 

 Society of Arts, together with thirty guineas. 



* The following statement of some of his most important 

 discoveries, in a letter from the pen of the most distinguished 

 physicist now left to us in Manchester, is an admirable 



T 



