3 io Dr. Blagden’s Experiments on 
the occafion of this, than that there fhould be fuch an irregu- 
larity in the law. 
If any perfon fhould alledge, that the difference between 
the obferved and computed freezing points in the foregoing 
tables is not fufficient to eftablifh the increafe of ratio, I can 
only reply, that it appears to me greater than can reafonably 
be afcribed to error in the experiment ; efpecially as fimilar 
experiments with neutral falts, not condu&ed more atten- 
tively, agreed fo well together in pointing out a different law. 
It mud be allowed, however, that the experiments do not 
fhew any increafe of ratio, except in the vitriolic and nitrous 
acids, fait of tartar, and, with more ambiguity, in fpirit of 
wine : from analogy only I fufpeft it to take place in the other 
acids, and in the mineral and volatile alkalies provided they 
are cauftic. That a different law from what prevails in the 
neutral falts fhould take place with thefe fubftances, leems not 
furprifing, when it is conlidered how much dronger attrac- 
tion they fhew for water, and how much lefs limited the pro- 
portion is in which they will unite to it : for the fame reafons, 
I fhould not think it extraordinary, if deliquefcent falts, com- 
bined with water, fhould be found to obferve the fame in- 
creafing ratio in deprefling the freezing point. 
As other experiments upon the watery congelation of acids, 
and in lower degrees of cold, have been given to the public, it 
would have been definable to compare them with mine, and thus 
to havq^obtained a greater length of fcale. But the difficulty 
- of afcertaining the precife ftrength of different acids is fo great, 
and a fmall uncertainty in this refpecl may occafion fo much 
error, that I conceive little reliance can be placed, with regard 
to the prelent objeft, upon any experiments except fuch as are 
4 made 
