MEMOIR. XXXV 



that I was altogether unequal to it; for 

 each night's labour fatigued me so much, 

 that I could not undertake a second for 

 several days after. In the mean time my 

 ancles began to swell in the evening, which 

 I regarded as a mark of general weakness. 

 At length, I became so infirm about the 

 end of 1813, that I was absolutely obliged 

 to give up any further visits to the country. 

 In the beginning of 1814, a considerable 

 snow having fallen, I could not resist the 

 temptation of going for several evenings to 

 Lincoln's-Inn-Fields, during a very severe 

 frost, in order to repeat and extend some 

 of Mr. Wilson's experiments upon snow. 

 I soon however was obliged to desist. I 

 became breathless on slight motion ; and 

 was frequently attacked with palpitation 

 of my heart. My friend, Dr. Lister, be- 

 came alarmed at my situation, and strongly 

 urged my remaining quiet, as he thought 

 it improbable I should survive more than 



