1803.] 
and another, who was returning to his 
work, loft his hearing for feveral hours, 
Some of the bricks of the furnace were 
thrown 600 feet from the furnace. This 
fatal accident was probably owing to 
the over-loading of the fafety-valve, 
‘The boiler was of caft-iron, and about an 
inch and a quarter thick, 
Tt will be interefting to many Readers 
of the Monthly Magazine to be informed, 
that there is every reafon to hope that 
the Reve Tuomas Fyscus PaLMER is 
fate on his voyage home. . The friends of 
this gentleman had long fince given him 
up for loft; by letters, however, received 
within thefe few weeks from the Philip- 
pines, it appears that he was at Manilla, 
where he had been driven by firefs of 
weather; that he was much broken in 
heaith and conftitution, but that he in- 
tended to take the firft opportunity that 
fhould prefent itfelf for returning toEsgland. 
A Board of Agriculture has been. in- 
ftituted at Philadelphia. The eftablifh- 
ment of fuch a focicty was a favourite 
idea of the late General Wathington. 
Tt appears by the laft letters from Capt. 
BaubDin, who js employed by the French 
Government, on a voyage of difcovery, 
that the population of Port Jackfon, and 
the adjacent places occupied by the Eng. 
lifh, amount to 6,000 perfons, who are 
chiefly employed in agriculture. The na- 
tives fettled in the neighbourhood of Port 
Jackion have retired to the interior part 
of the country m proportion as the Eng- 
lifh have penetrated inio it. ‘They are, 
however, frequently met with, but never 
in confiderable nombers.. They have lolt 
but little of their primitive habits. The 
ftock of cattle has fo much increafed, 
that in the month of Auguft 1802, there 
were reckoned 800 bulis, 3600 cows, 
6,000 fheep, 1800 goats, aiid more than 
10,000 hogs. 
The eclipfe of the fun which took 
’ place on the morning of the 17th of Au- 
guft, was oblerved at Paris by DeLam- 
BRE, MEssreR, LALANDE, jun. Burck- 
HARDT, and LaLanbgE, Sen. The latt 
gentleman fays, ‘* 1 faw the commence- 
ment at 5> 59’ 18’, at the collge of 
France ; and Meflicr obferved the end at’ 
7° 46' 8", Inconfequence of the rule, I 
have formed to calculate fuch obfervations, 
the fame day I found the conjunGion at 
6” 30’ 24” true time, reduced to the me- 
ridian of the obfervatory. ‘This will ferve 
_ as aterm of comparifon for finding the 
longitude of all thofe countries where it 
may have been obferved with accuracy. 
Xt was annular in Egypt.” 
Literary and Philofophical Intelligence. 
357 
- Mr. Woot has lately invented a boiler 
for fteam-engines on anew conftruction, 
which is calculated to refift a much greater 
degree of expanfive force than can ever in 
any cafe be required. Inftead of a fingle- 
veffel, it confits of a combination ar ¢y- 
lindrical tubes, which unite the two-fold 
advantage of expofing a much larger fur- 
face to the action of the fire than the coms 
mon, boiler, while they poflefs. a much 
greater degree of ftrength. 
C. Conrs! has found out a compofition 
that will effectually prevent iron, tteel, 
&c. from rufting. This method conhfts 
in mixing with fat oil varnifh four-fifths 
of well-rectified {pirit of turpentine. The 
varnihh is to be applied by means of a 
fponge; and articles varnifhed .in this 
manner will retain thew metallic bril- 
liancy, and never contraék avy {pots of 
raft, It may be applied to copper, and 
to the prefervation of philofophical in- 
ftruments, which by being brought into 
contact with water are liable to lofe their 
{plendour and to become tarnifhed. ; 
Dr. ScHAUB has difcoyered a new me- 
thod of obtaining Pruffic acid. in a ftate 
of abfolute purity. Ihe procefs confits 
in pouring upon one part of Pruffian-blue, 
half as much fulphuric acid, diluted with 
an equal quantity of water, and fubfe- 
quent diftillation, The Proffic acid paffes 
over.in alkohol: its odour greatly refem- 
bles the water of the Lauro Cerafus, it is 
a deadly poifon to animals. 
The following «method of obtaining 
tungften is recommended by RICHTER, a 
German chemilt:—Let, equal parts of 
tungfien oxide (tungftic acid) and dried 
biced be expoled tor fome time to a red 
heat ina crucible; pals the black pow- 
der, which is formed, into another imaller 
crucible, and expote it again to a violent 
heat ia a forge for at Jeaft an hour, and 
*tungften will be found in the crucible in 
its metallic fate. 
Mr. .R. Viazis has invented an infru- 
ment for facilitating evaporation. It con- 
fits of a hollow cylinder, caufed to re- 
velve flowly within a boiler of correfpond- 
ent form and dimeofiens. A. common 
roafting-jack may be {fo applied as to give 
motion toa suinber of thefe cylinders, 
Equal veffels being filled with water, and 
expofed as nearly at poffible to the fame 
degree of heat, the cylinder was applied 
to one of them, and it was found that tue 
evaporation in this veflel exceeded that of 
the other in the proportion of three to two 
nearly. The heat of the agitated veflel 
was-conflantly 170%, that of the other 
RIB?» ; 2 
a M. 
