142 Dr. Hare on the Cause of Heat. 
the month of July. I believe I am authorsed in the con- 
clusion therefore, that the whole quantity which fell in this 
bore during that month, exceeded twenty-four inches on a 
lev 
1 ees not the means of rosie. whether similar rains 
have, or have not, occurred in other countries. It is stated 
‘in the Christian Observer, that he mean annual quantity of 
rain is at Rome thirty-nine inches; in England thirty-two ; 
and at Petersburgh sixteen. It is also stated in the same 
work, (Vol. 8th, page 733,) that “ the quantity of rain which 
fell in September (1818) was equal to four inches in depth, 
a quantity, perhaps, unprecedented at the like season, in 
the metrorological annals of this country, (England.) The 
depth of rain in the two preceding months was likewise unu- 
sually great, having exceeded seven inches.” In many 
tropical regions the mean annual quantity Pa exceeds 
that, nines exists in ne countries above mentione 
Ant. XI1.—Letter frote Rib Pee: 2M. D. Professor 
of Chemistry in the University 0) syle 
Se. to the Editor, in i gene to te conjecture deben! 
be motion ; an avour of the existence of a ma- 
terzal cause of bailarific' repulsion. 
Dear Sir, 
{x two memoirs published in your Journal, [ have en- 
deavored to shew that calorie and electricity, are collateral 
agents in galvanism, the ratio of the former to the latter, in 
quantity, being as the extent of the operating superficies to 
the number of pairs into which it may be divided. In those 
publications I assumed, that the causes of heat and elec- 
tricity are material fluids. Although this re of the ori- 
gin of calorific repulsion is taken by a great majority of 
chemists, it has been combated, both by ” Rumford, and 
ee former famous for his i ingenious, instructive and 
experiments ; and the latter distinguished by the 
most venta discoveries. With the utmost deference for 
the authority of these great men, especially the latter, I send 
t ete remarks made in answer to his hypothetical 
