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20
During a series of experiments on the quantity of
naphtha consumed, I found that it varied considerably,
but the average amounted to 10.9 grains per cubic foot
of gas.
Assuming, then, 11 grains of naphtha to be consumed
per foot, the quantity burnt annually would be rather
more than two gallons, at 3s. a gallon.
The apparatus is applicable to street lamps, and the
preceding experiments show, that the brilliancy of inferior
gas is increased, and the consumption economized,
by the addition of naphtha.
In St. George's Parish the question of cost must be
compared with cannel and not with common gas, the
parish lamps being supplied with the former.
I could not, on that account, and for other reasons
mentioned in the Report, recommend the Vestry to make
any alteration.
(Signed) C. J. B. Alms, M.D.