4 Thomson, Presidential Address. 



fact that some men had remained in a room, the temperature 

 of the aijr of which was far above that bf the human blood 

 for half an hour, the heat of their bodies did not increase more 

 than (three lor four degrees. 



Another paper appears by the Rev. iSamuel Hall, M.A., on 

 "An attempt to show that the beauties o'f nature! and the fine 

 arts has no- influence favourable to morals." This was a reply 

 to ia '.paper read before the Society by iDr. PerciVal. 



D|r. Peter Mainwariing, one of the first Presidents, was an 

 eminent physician in Manchester, whiO' presented to the Royal 

 Infirmary a collection of bookfe, (and book cases, which formed 

 the (nucleus of the present library. He wajs elected; a member 

 of the 'Society i(n 1781, ainid died ait the age of 91 in the year 

 1785. 



In 1773, it may be noted., that the inhabitants of Manchester 

 and Salford numbered 19,-839;) to-day they are about fifty times 

 that number. 



Dr. William Henry, F.R.S., was elected a member of this 

 Society on the 29th April, 1796. He was assistant to Dr. Per- 

 cival- He was engaged at the Manchester Infirmary under Dr. 

 Farrier, another famous physician, and is perhaps best known 

 as having introduced calcined magnesia as a medicine, which 

 is still known as " Henry's magnesia." 



Dr. Alexander Eason was born in 1735, an d became a 

 member of the Society about 1781. He was a member of the 

 medical staff of 'the Ijnfrrmary. He lived in Lever (Streejt, 

 Piccadilly. lit is recorded that (he bought the house and grounds 

 for ,£800, which 80 years later produced an income of ,£1,600 

 per annum. A tablet wjas erecjted to his memory in the Man- 

 chester Cathedral, contributed by penny subscriptions From 'the 

 poor. He met with an accident through the stumbling of his 

 horse whilst on his way to visit a patient, Miss Yates, aunt to 

 Sir Robert Peel, which caused his death at the age of 61. 



John Massey was elected a member in 1781 (and was one 

 of the first presidents, already mentioned). He read a quaint 

 paper before the Society on the " Manufacture of Salt-Petre 

 from the de composition of dung heaps when mixed with wood 

 ashes." 



Charles White, F.R.S,, author of " Gradation in Man," 

 a famous surgeon, was one of the firsjt Vice-Presidents. He 

 followed his father, Dr. Thomas White', and was a fellow 

 student and friend of John Hunter. The^e is a letter published 

 from his son, M|r. Thomas White — also a Medical man — dated 



