118 Morey on Heat and Light. 
I see no ebjection to this treatment, except from the great 
weight above, say 2S tons in a ship of 300. The expense 
is not material, but the iron work I should think would re- 
quire renewing oftener than in the other modes. Whether a 
dampness would be created injurious to the health of the 
crew of a large ship of war, to its provisions and amunition, — 
orto the freight of valuable goods, requires further expe- 
rience. ; 
G. GIBBS. 
Arr. XII. On Heat and Light ; by Mr. Samue, Morey* 
of Orford, New-Hampshire. 
[First Communication. ] 
TO THE EDITOR OF THE AMERICAN JOURNAL OF SCIENCE, &ex 
Sor, 
tr in the following experiments on light and heat, with 
remarks on the economy of burning water as an object of 
fuel, any thing can be found worthy of a place in your val- 
uable Journal, it will be perhaps more than I could reason- 
ably expect. 
Yours respectfully, 
S. M. 
Water, it is well known, is composed of some of the best 
materials for producing light and heat; but when formed 
by combustion, something which those materials did contain 
appears to be parted with, or is neutralized, which must be 
‘restored to render them again combustible. 
How shall that be effected, so as torender the process 
easy and useful ° 
* T presume that no apology will be necessary for giving Mr. Morey‘s 
valuable communications entire. They are the practical results of an m- 
genious practical man who as he ingenucusly states, ‘having no preten- 
sions to seience, no chemical or philosophical apparatus and little or no ac- 
cess to men of science, has spent much of his life in experiments.” Suck 
yesul{s are often very valuable, and perhaps, in some cases, not the less so, 
for having been sought without the direction of preconceived, theoretical 
yiews.—-Lditor. ; ; 
