a Morey on Heat and Lighi. 
I see no objection to this treatment, except fromthe great 
weight above, say 28 tons ina ship of 300. The expense 
is not material, but the iron work I should think would re- 
quire Po i: oftener than in the other modes. Whether a 
uld be created injurious to the health of the 
crew of a lage ship of war, to its provisions and amunition, 
or to the freight of saree goods, requires further expe- 
rience. 
: G. GIBBS. 
Art. xi On Heat and Light ; by Mr. acne Monex* 
of Orford, New-Hampshi 
[First Communication.] 
TO THE EDITOR OF THE AMERICAN JOURNAL OF SCIENCE, &¢. 
Sir, — 
TF in the (olcwide -cepethinente ou Fe sie sith 
remarks on the economy of burning water as an object of 
fuel, any thing can be found worthy ofa place in your val- 
> agave it will be avin more than 1 could reason- 
Re Yours respectfully, 
SM 
Water, it is well nowt is ésthipiiNed of some ot sh bait 
materials for producing light and heat; but when formed 
by combustion, Pieces: which those materials did contain 
appears to be parted with, or is neutralized, which va be 
ie hoe to ee them again combustible. 
shall that se: effected, S80 as to > render the  gipengee 
ey: nd useful ? 
I presume that no apology will be wig om for giving Mr. Morey 
algaiin communications entire. They are the practical results of an i- 
gens Pathe d man _who as he ingenuously states, * hating no preten- 
sio emical ot and Ij i or nO Re- 
cess s-to o men of se pees has s ent much ‘of. his life in in “experiments.” § 
results are ag cack val abl ns perhaps, in some cases, not the less 30, 
ews bit 
= haying — song without te Hithettch of precon ection thabrencd 
mtn ma 
