EXAMINATION OF CRYSTALLINE ROCKS—HONEYMAN. 301 
These in the section with polarised light are beautifully pleo- 
chroic with radiating structure. The rock seems to be a mix- 
ture of hornblende and feldspar. 
No. 5 is dichroic with opaque portions. Magnetite ? 
Other three sections are (1) of Arisaig Pier rock ; (2) of a Saw 
Mili rock, in the mountains, and of Doctor’s Brook, south of 
Arisaig Pier; (8) of mountains west of the Saw Mill. 
No 6. (1) section, of Arisaig Pier rock, an igneous rock of 
Lower Carboniferous age, shows rock unindividualized with 
kernels of calcite and magnetite. 
No. 7. (8) unindividualized with magnetite grains. This is 
apparently of Devonian age. 
The examination of the Nos. 4, 5, 6, 7, is not so satisfactory as 
of 1, 2 and 3. 
