On purifying Coal Gas.—Lumps.—Steam Engines. 467 
ON PURIFYING COAT GAS. 
In our last Number but one, we inserted a letter from Mr. 
S. Parker, of Liverpool, on the above subject ; and in our last 
Number, another from Mr. G. Lowe, of Derby ; also the speci- 
fication of a patent for the same purpose taken out by Mr. G. 
H, Palmer in January last. To the information afforded by 
these articles we now add, that an apparatus extremely similar 
to that specified by Mr. Palmer has. been publicly exhibited at 
the Agricultural Repository in Winslow-street, Oxford-street, 
upwards of two years. It was made by Mr. Manby, Director of 
the Horseley Company’s Iron Works near Dudley in Worcester- 
shire, and who has been for several years past engaged in the 
manufacture of similar apparatus, and in fitting them up in va- 
rious parts of this country. 
LAMPS. 
In lamps it is essential that the oil be kept on a uniform level 
with the wick—the reservoir therefore has necessarily been in an 
obtrusive and inelegant position. A gentleman in Paris has re- 
cently made some beautiful lamps, where the oil is in the base of 
a column, and is pumped up by a spring and pendulum working 
in the oil, the surplus supply returning to the reservoir by a waste 
pipe ; thus enabling the workman to give them any ornamental 
or fanciful shape.—S. 8. 
STEAM ENGINES IN CORNWALL. 
From Messrs. Leans’ Report for November 1818, it appears 
that the following was the work performed during that month, by 
the engines reported, with each bushel of coals. 
Pounds of water lifted | Load per square ' 
1 foot high with each bushel.| inch in cylinder. 
23 common engines averaged 21,356,818 various. 
Woolf’s at Wheal Vor és, .0)s0d4,312 17°8 lib. 
Ditto Wh. Abraham .. 36,441,367 16°8 
Ditto PitOS: wis «- 19,233,473 6°7 
Wheal Abraham engine .. 9 31,508,419 10:9 
Daleoath ditto oo) code bedgone 11:3 
United Mines ditto -- 34,680,485: 18°6 
Treskirby ditto .. .. 984,987,815 11°25 
Wheal Chance ditto -. 31,274,981 | 12:2 
THE UNUSUAL SEASON. 
Among the many phzenomena produced by the unusually warm 
summer and autumn which we have had this year, may be reck- 
oned the appearance already of several of the ordinary produc- 
tions of spring. Three weeks ago the Narcissus was in bloom in 
Gg2 a shel- 
