C 2l6 ] 
Received June 8, I7<^p. 
j 
XXX. A Letter from Mr. Lane, Apothe-^ 
cary^ in Alderfgate-ftreet, to the Ho- 
7tourable Henry Cavendifli, F. R. S. on 
the Solubility of Iron in fiinple Water ^ by 
ihe Intervention of fixed Air. 
Alderfgate-ftreetj June 5, 1769. 
Sir, 
Read Nov. 23,^ i 5 H E various impregnations of mi- 
1769. neral waters have always been very 
difficult to explain : and whoever has read the divers, 
and often contradictory reafonings upon the fubjeCt, 
mufl: clearly perceive, that there is Rill room for dif- 
coveries in this part of natural hiftory. 
You, Sir, by your accounts of fixed air, and of 
Rathbone-place water, related in the lafi: volume of 
Philofophical Tranfadlions, have obliged the public 
with many additional lights on this branch of know- 
ledge ; and, from your known accuracy, and diligent 
purfuits in mofi: philofophical inquiries, the learned 
world has great reafon to hope for many other new 
and ufeful improvements. To your judgment there- 
fore, 1 fubmit the following experiments ; which are 
intended to fliew, that iron is foluble in fimplc water, 
by 
