Ab4 Lithography. 
about eight feet—and in form an exact cone. The top is oper, 
and the interior keeps constantly boiling and heaving up like 
the bluddugs. The hillock is entirely formed of mud which has 
flowed out of the top ;—every rise of the mud was accompanied 
by a rumbling noise from the bottom of the hillock, which was 
distinctly heard for some seconds before the bubble burst ;—the 
outside of the hillock was quite firm. We stood on the edge of 
the opening and sounded it, and found it to be eleven fathoms 
deep. The mud was more liquid than at the blnddugs, and no 
smoke was emitted either from the lake, hillock, or pools. 
* Close to the foot of the hillock was a small pool of the same 
water asthe lake,which appeared exactly like a pot of water boiling 
violently ;—it was shallow, except in the centre, into which we 
thrust a stick twelve feet long, but found no bottom. ‘The hole, 
not being perpendicnlar, we could not sound it without a line. 
«© About 200 yards from the lake were two very large pools or 
springs, eight and twelve feet in diameter; they were like the 
small pool, but boiled more violently and stunk excessively. We 
could not sound them for the same reason which prevented our 
sounding the smal] pool. 
“ We heard the boiling thirty yards before we came to the 
pools, resembling the noise of a waterfall. These pools did not 
overflow—of course the bubbling was occasioned by tie rising 
of air alone. The water of the bluddugs and the lake is used 
medicinally by the Javanese.” 
LITHOGRAPHY. 
The art of lithography continues to make most rapid progress 
in France from the rival exertions of Count Lasteyrie and M. En- 
gelmann: their spirited emulation has done for it what a mono- 
poly would not bave accomplished in a century. Under Count 
Lasteyrie’s care, it rivals copper in almost every line of engrav- 
ing, and possesses, besides, advantages peculiar to itself, A 
series of lithographic prints, by Count Lasteyrie, is now pub- 
lishing in Paris, under the title of “A Collection of different 
Kinds of Lithographic Impressions, which may be advantageously 
applied to the Sciences, and the Mechanical and Liberal Arts.” 
The second number, containing six plates, has just appeared ; 
an account of them cannot fail to interest our readers. The first 
is the original design of a great master,—a pen-and-ink drawing, 
which is rendered with perfect fidelity and spirit. This plate 
offers, too, another species of interest, and that very important ; 
the design has been traced on the stone upwards of sixteen years, 
and the proofs are as fine and spirited as if it had not been done 
60 many days. This is a triumphant proof that lithographic de- 
signs upon stone may be kept any length of time, like —— 
plate. 
