126 MUSEUM METEORITES—HONEYMAN. 
a little nickel but the peridots of the meteoric iron like that of 
Siberia and Atacama do not contain it, although they are en- 
veloped in one mass of iron, where the nickel enters in the pro- 
portion of 6 to 10 per cent. 
Note.—I have frequently directed the attention of the Insti- 
tute to the terrestrial olivines. Ist. In my Polariscopie inves- 
tigations (Trans., vol. vi., pp. 122-3) I noticed—for the first 
time—olivine, in a section of our Blomidon basalt (dolerite). 
I also showed it abounding in pieces of a large basaltic boulder. 
This was examined macroscopically, and also microscopically in a 
section similar to that of Blomidon, prepared for me by A. Julien, 
N.Y. 2nd. Subsequently it has been referred to frequently in 
my Papers “On Glacial Geology ” (Trans.) as occurring in similar 
boulders on the Bedford Basin and in the Halifax Peninsula, 
such as on the Citadel Hill and other strategic glacial accumula- 
tions, noticed in my Paper “On the Glacial Period on the East 
Coast of Canada,” read before the Victoria Institute, London, 
April 8th. In some of these boulders the green of the olivine 
appears very abundant and distinct on the weathered outside, 
which is generally red in consequence of the decomposition of 
the abounding magnetite, associated with the augite (pyroxene) 
and labradorite. 
TEMPERATURE. 
“The operations of which Iam going to render an account 
have been made with a temperature near the melting point of 
platina.” Vide Comm. 
II. Conclusions relative to the mode of formation of the 
planetary bodies, whence the meteorites proceed. 
It is necessary, first of all, to remark that we do not here seek 
the cause which brings the meteorites to our globe. It is our 
object to illustrate their moe of formation as far as the difficulty 
of the subject permits. 
The meteorites reach us on the surface of the earth with a 
form, in general, that of polyhedrons with the angles blunted. 
They appear only to be pieces detached from masses of greater 
or less size, which after entering our atmosphere retreated, when 
