23G 
seems to be favourable to the progress of the disease, whilst 
the extremes of both heat and cold seem often to exert a 
disturbing influence one way or the other — a temperature 
above the average generally diminishing, cold increasing the 
number of cases. 
The remarkable supplementary alternations of scarlatina, 
measles, and whooping cough, were pointed out; and the 
opinions of other observers, as Hippocrates, Sydenham, Drs. 
Miihry, Wilde, and Donnelly, were appended to the minute 
comparison of the curves which followed each proposition. 
PHYSICAL AND MATHEMATICAL SECTION. 
Annual Meeting, March 29th, 1860. 
'Fhe following gentlemen were elected Officers of the 
Section for the ensuing year : — 
President, Mr. Robert Worthington, F.R.A.S. 
Vice-Presidents, 
Mr. I. W. Long, F.R.A.S. 
Mr. E. W. Binney, F.R.S., F.G.S. 
Treasurer, Mr. Joseph Baxendell, F.R.A.S. 
Secretary, Mr. Thomas Heelis, F.R.A.S. 
Mr. Baxendell, F.R.A.S., read a Paper, entitled, 
“ Remarks on the Theory of Rain.” 
It has been well established by numerous carefully con- 
ducted experiments, that the quantity of rain received by 
a gauge placed on or near the ground is almost invariably 
greater than that received by a similar gauge placed at a 
