SULPHURIC ACID FOR WATER. 379 
more correct ideas than we could have done with- 
out them, of the strengths of acid required to 
balance the evaporating force of space under other 
not widely different atmospheric temperatures and 
pressures, and afford us some information on the 
extent to which sulphuric acid is a drier of the 
atmosphere. Was this the whole amount of the 
information furnished by them, it would not, I 
trust, be considered too trifling to support me in 
the propriety of submitting them to the notice of 
men of science*: but, 1 feel that they more ex- 
tensively support me, when I find that reflection 
upon them enables me to furnish information 
whereby improvement in the more economically 
conducting the manufacture of sulphuric acid may 
hereafter most probably be made. 
* Dr. Faraday has remarked (Phil. Magazine, for October, 
1833,) that many facts present themselves to observant men, 
which, though seen by them to be curious, interesting, and 
new to the world, are not considered worthy of distinct pub- 
lication : that he has often felt this conclusion to be objection- 
able ; and is convinced that it is better to publish such facts, 
and even known facts under new forms, provided it be done 
briefly, clearly, and with no more pretension than the phceno- 
mena fairly deserve. 
