132 Scientific Intelligence. 
ag sng The general resemblance of their forms, however hose 
f No. 12 is so close, as to leave no doubt of their crystalline nen i 
“At 18-2° C., specific gravity = 4-1885. _ 
«Tt attracts the magnetic ioneses strongly.” : 
* We regard slag No. 14 as similar in constitution to the preeilinars ‘ 
the alumina, some ‘of the sacegariare of iron, and the phosphoric acid 
being present as impurity. The presence of so large a quantity of | 
3 of iron in this slag, is probably to be explained by its long 
absorption of oxyge n. e powder of the slag, when heated to red- : 
ness in a platinum crucible, changes color, acquiring a brown ons x 
and increases in weight. The quantity of phosphoric acid is also 
_markable, and is well deserving the attention of those engaged in ve — 
smelting of i iron. Bertbier has given ir analysis of a refinery slag a 
from Dudley (Traité des Essais, t. 2, p. 289) containing 7-2 per cent. 
of phosphoric acid. It is found that then puddling furnace slag (tap ae 
cinder) is il with the ordinary ores of iron, such as argillaceous: ie 
ore and hemat » the i iron is liable to be ‘cold short,’ or possess ies 
pe eee ae 
e 
sheibe acid, the aahatabtcinet will be introducing into the furnace the 
ve i d it i tC 
those Sifscd in ahd manufacture of iron. e iscovery of a meth- 
‘ 
or. 
15 is inferred from the measurements of Prof. Miller to be a 
tical ith o. 13. 
2. Mineral Localities in New York; by F. B. H.—The following 
seen id are not mentioned in the E inal Geological Reports s of 
Carbonate of Strontian occurs in the town of Theresa, Jefferson : 
o., in considerable quantities, It much resembles specimens from 
Strontian Island in rie. ‘ 
Yellow Ochre is found in Rutland, Jefferson Co., near the banks of 
Black River. Jt has been used to's limited exten 
Chalcedony occurs in nodular masses of considerable size in the 
rock at nies ral bridge, Jefferson Co. Good specimens may be proc ured. 
as been detected by Mr. Wilder of Lowville, occurring with 
‘inhi, sphere, pyroxene, &c., on the farm of Mr. Cleveland in 
Diana, Lewis Co. It is in small but very brilliant prisgaue crystal 
ng the usual crystalline forms. It is rare; but a very few crys , 
tals ‘having been found. i 
Magnetic Oryd of see has been recently found in beds in the pnt x 
rock of Greig, Lewis _he mine has been explored to to some extent — 
and 
