VICTORIAN METEORITES, WITH NOTES ON OBSIDIANITES. 
hydrochloric acid leaves a fair amount of taenite lamellae behind 
after solution of the bulk of the nickel-iron. 
Sometimes taenite lamellae can be traced continuously for con- 
siderable distances, following a sinuous course between the kamacite 
plates, and occasionally terminating by branching into the latter. 
It is always extremely thin, and in places quite invisible. On many 
flakes of taenite the surfaces are thickly studded with angular 
metallic particles of what is probably schreibersite, and also fine 
prismatic crystals which are apparently rhabdite. 
Analyses oj Taenite : — 
I. 
II. 
III. 
IV. 
Iron 
65-58 .. 
46-33 .. 
57-70 .. 
58-59 
Nickel 
24-10 .. 
34-98 .. 
35-72 .. 
25-60 
Cobalt 
0-74 .. 
1-00 .. 
0-80 .. 
0-73 
Copper 
0-17 .. 
0-05 .. 
0-32 .. 
0-24 
Phosphorus 
1-23 .. 
4-27 .. 
2-87 .. 
0-94 
Residue 
— 
0-91 .. 
0-14 .. 
2-50 
91-82 .. 
87-54 .. 
97-55 .. 
88-60 
Amount used 
0-0892.. 
0-0550.. 
0-0698.. 
0-100 
Bayly makes the following note on these analyses : — - 
“ The material used in analysis No. I. was obtained partly by 
chemical means (by dissolving the nickel-iron in dilute hydrochloric 
acid), and partly by mechanically picking out the flakes of taenite 
from the disintegrating mass. In the other analyses the whole of 
the taenite was separated by acid treatment. In the case of analysis 
No I V , special care was exercised to remove the flakes as quickly as 
possible from the acid solution. The high phosphorus contents 
of the first analysis confirmed the belief that the crystals on the 
taenite lamella) were phosphor-nickcl-iron mincials, and m analysis 
No IV , dilute hydrochloric acid (1-5) was used as a solvent in order 
to try and effect a separation by partial solution As a result 
a much larger residue was obtained than in the analyses where this 
precaution "had not been taken, with a corresponding decrease m 
the phosphorus percentage. An experiment on a further small 
portion of taenite seemed to indicate that the use of cold dilute 
nitric acid (1-5) will give a much quicker and equally good separa- 
tion ' Copper-ammonium chloride was not used as a solvent on 
account of it loading the solution with copper, and also, because 
the phosphor-nickel-iron did not appear to be entirely insoluble 
in it In all the taenite analyses it will he observed that the sum- 
nation is very low-in one instance over 11 per cent. This dis- 
crepancy is difficult to explain. The analyses were made by the 
methods described elsewhere, which had proved entirely satisfactory 
the other analyses of the series. The separations appeared to 
be complete, and each determination was made with the utmost 
[ 23 ] 
