Tron and Steel, —Small- Pox. 23g 
yices rendered ‘by Cit. Beauchamp to that ufeful ference, 
He was accompanied by Charles Hyacinth Receveur, his pax 
pil, who, though only feventeen years of age, was an accu 
rate obferver and an able ealeulator#, On the 4th of Sep- 
tember they returned to Conftantinople ; and on the 20th of 
O&ober fet out for Bagdad. M. Beauchamp, befides ihe 
fervices he rendered to geography and aftronomy, tranimitted 
to the National Mufeum at Paris a great many plants, 
feeds and infects; and to the literary clafs of the National 
Tnftitute a number of unknown ancient Greek infcriptions, 
He found the variation of the magnetic needle at Conftanti- 
nople to be 12° 33/5 and at. Trebifonde 8° 14’. 
CONVERSION OF IRON INTO CAST STEEL. - 
A new method of preparing caft fteel has been lately ane 
nounced in France by Cit. Clouet. His procefs is as follows : 
Take fmall pieces of iron, and place them in layers in a crn- 
cible with a mixture of the carbonate of lime. ‘Six parts of 
the carbonate of lime, that is chalk, marble, limeftone, and 
in general all calcareous fubftances, and fix parts of the earth 
of pounded Heffian crucibles muft be employed for 20 paris 
of iron. This mixture muft befo difpofed that, after fufien, 
the iron may be completely covered by it, fo as to be kept 
from coming into contaé with the atmofphere. The mix- 
ture is then to be gradually heated, and at laft expofed toa 
“heat capable of melting iron. If the fire be well kept up, an 
hour will generally be found fufficient to convert two pounds 
‘of iron into excellent and exceedingly hard fteel capable of 
being forged, an advantage not poffefled by feel procured in 
“the common manner. 
EXTIRPATION OF THE SMALL-POX. 
M. Lenz, Profeffor at the Inftitute of Education of Schnep- 
fenthal near Gotha, known by his Travels through Sweden, — 
* This young man died fince at Aloppo,on his way to Bagdad. Eprr. 
, has 
