CRANBOURNE, ROWTON, AND MIDDLESBROUGH. 
895 
at the point where it impinged on the earth the oxides had been removed, and the 
metallic character of the mass had been revealed. 
When the meteorite reached the British Museum it was at once seen that it was 
wholly metallic in structure and was covered with a very thin pellicle of the jet-black 
magnetic oxide of iron, and only where this had been removed by abrasion with the 
soil is the bright metallic surface of the nickel-iron revealed. The depth to which the 
meteorite penetrated the soil is proof of how much momentum still remained to it, 
partly due, no doubt, to the approximately vertical direction with which it entered the 
atmosphere, and in some degree to the higher density of an iron mass as compared 
with one of stone, the rocky meteorites rarely penetrating to so considerable a depth. 
The meteorite closely resembles the siderite of Nedagolla, in India, as Professor 
Story-Maskelyne, M.P., F.H.S., has pointed out. 
XI. The nickel-iron of the Rowton siderite. 
Some fragments which had been removed 
analysis, with the following results :— 
by the lapidary’s 
wheel were submitted 
I. 
II. 
Iron. 
91-250 
91-046 
Nickel. 
8-5821 
9-077 
Cobalt. 
0-371J 
Copper. 
trace. 
trace. 
100-203 
100-123 
This nickel-iron has the composition closely approaching that of what may be called 
a normal nickel-iron—in short, the metals are in the ratio in winch they are met with 
in their oxides when precipitated from an iron solution, containing an excess of nickel 
oxide, by ammonia, both when a large excess of ammonium chloride is present and when 
it is absent. As a result of several analytical determinations it was found to be : 
Iron. =0-1231 =91*12 
Nickel. =0-0120 = 8'88 
0*1351 100-00 
XII. The troilite of the Rowton siderite. 
One of the fragments of nickel-iron devoted to the analytical examination was found 
to contain a section of a nodule of troilite ; this easily dropped out of the iron ; where 
it was in close contact with the alloy it was covered with a very thin layer of 
graphite. No cleavage planes were noticed on the specimen; it was examined with a 
MDCCCLXXXII. 5 Y 
