288 
Proceedings of the Royal Society of Edinburgh. [Sess. 
H.M.S. “Triton.” 
Station 5. 10th August 1882. 
Lat. 60° 20' 15" N., long. 8° 8' W. ; depth 433 to 285 fms. 
The materials from this Station resemble those from Station 2 of the 
Knight Errant in their condition and their mode of arrangement. Most 
of the stones appear to have been glaciated and subsequently scoured by 
sand but not rolled, while the attached organisms show that they were not 
embedded but rested on small points only, and usually on their more 
flattened sides. They are mostly small, only one attaining the length of 
4 inches ; the others are all under 2 inches. 
Torridonian rocks are represented by only one small specimen of grit 
or arkose. 
To the Old Red Sandstone probably belong one subangular fragment of 
yellow sandstone like the upper Old Red Sandstone of Hoy or Dunnet 
Head, four fragments of grey sandstone with carbonaceous streaks, all 
resembling some of the Lerwick sandstones of Shetland. 
Metamorphic rocks are represented by one specimen of fine-grained 
granulite and one of muscovite-biotite gneiss like the Moine rocks. One 
small pebble of phyllite or fine-grained mica-schist is like the rocks of the 
Cliff Hills in the south of Shetland. 
Igneous rocks are represented by one rolled pebble of fine-grained 
diorite and one of pink red-stained granite, which has been glaciated. 
These have in all probability been derived from a conglomerate of Old Red 
Sandstone age. 
H.M.S. “Triton.” 
Station 13. 31st August 1882. 
Lat. 59° 51' 20" N., long. 8° 18' W. ; depth 570 fms. 
The material from this locality resembles that from Station 5, but is 
more abundant. 
The Torridonian rocks contribute fourteen specimens, twelve being of 
the characteristic arkose and two detached pebbles of reddened gneiss. 
The Cambrian quartzite supplies eight small subangular fragments, the 
largest only f inch in longest diameter. 
The Old Red Sandstone is represented by sixteen small flattish rolled 
pebbles of “ Caithness flagstone ” type and fifteen of hard grey sandstone, 
like some of the harder beds intercalated with the flags in Caithness and 
Orkney, and one of friable red sandstone. 
