756 
Protoxide of iron 
Peroxide of iron 
Protoxide of manganese 
Lime ... 
Magnesia 
Alumina : 
Carbonic acid... 
Sulphur ave 
Phosphoric acid 
Water .. x 
Insoluble residue 
Protoxide of copper ... 
Metallic iron ... 
REPORT—1863. 
Spathose. 
By Dr. i 
49° 
I = 
3°96 
2°33 
37°20 
o'04 
trace 
0°30 
3°12 
99°96 
38°95 
Hydrated Peroxide. 
Dr. P. 
ercy. 
711 
6°60 
56 
1°90 
“40 
13 
$73 
12°40 
2 Si 4'0 
6:32 {a 1'97 
trace 
99°64 
49°78 
Dr. Richardson gives the following as the composition of a specimen of 
Weardale spathose ore :— 
Tron 
Lime and magnesia 
Silica ae 
Loss by heat 
The character of the iron produced from the above ores is of a marked 
kind, highly crystalline, and affording bar iron of a very excellent quality. 
Recently Mr. Attwood has succeeded, he states, by a plan of his own, in ob- 
taining very good steel from the iron. 
The composition of a description of iron coming so near in its properties to 
that of charcoal iron, as it does, is of sufficient interest to justify attention 
being drawn to it. 
3. 4. 
Swedish. Weardale. 
aaeee 527) --ares 894 OR 
Boe BIOZ teastate yA LO 
Shs Jo) erent he 
aaa Os ear aae 2a 
beans SO) mpacse ented 
sieve POR. assert ny Oy 
S25 —— [esviceal ew “OL 
99°82 100°00 
seeeee 
Dr. Perey. Dr. Percy. 
Weardale iron :—: 
No. 1. i 
German. German. 
Spiegel Hisen. Spiegel Hisen. 
TRON. oSves ses Bae vscene 98°655 
Carbon ...... rrp tecicee "210 
Silicon ...... SO tans ts 1'062 
Manganese...11°12 ...... — 
Sulphur ...... SI ROS SO trace 
Phosphorus.. °13 ...... trace 
Copper ...... Sie aes — 
100°00 99°927 
Autho- Mitchell 
pees Dr. Percy. and 
Richard. 
The following table shows analyses of both foreign and 
5. 6. 
Weardale. Weardale. 
White Spiegel. 
90°51 isseuee 96°775 
"O05 ss0ms 209% 
“TAO cases 882 
—— cotaees O21 
ane "229 
trace sse.e -— 
99°715 99°999 
Mitchell Washington 
and Laboratory, 
Richard. by M. Brivet. 
Dr. Percy afterwards haying reason to think the proportion of sulphur, as 
given in his analysis, was too high, repeated the examination, and found it 
only ‘03 per cent. in Weardale Spiegel Eisen. 
The slag from the furnace 
where the specimen No. 5 was made contained— 
Silica Be 2 we. 36°80 
Alumina, with a little oxide of iron and of manganese 13°80 
Lime ss 46°00 
Magnesia ... 2°54 
Soda and potash, “estimated as the difference . "86 
100°00 
