Messrs. Hicks & Davies—-Pre-Cambrian Rocks of Ross-shire. 155 
radius of a small Seal. I was enabled to compare this specimen with 
the skeletons of some young Seals in the Royal College of Surgeons, 
through the kindness of Prof. Flower, who, I believe, agrees with 
me, that although it would be very hazardous to give any specific 
name to this specimen, yet there can be no question as to its belong- 
ing to the genus Phoca. Mr. A. Savin, of Cromer, possesses a 
small canine (?) tooth from the “Black Bed” at West Runton, which 
there is little doubt belongs to the same genus. 
Since the above has been in type, Mr. R. Fitch, of Norwich, has 
kindly forwarded to mea portion of a lower jaw with teeth, lately 
obtained from the “ Forest Bed” of Mundesley, which, so far as 
preserved, agrees precisely in form with the same parts in the 
Glutton. I am enabled therefore before going to press to insert 
Gulo luscus, as a “ Forest Bed” species. 
If the above emendations and additions prove to be correct, then 
the Carnivora at present known from the Pre-Glacial “ Forest Bed 
Series” of the East of England are as follows (those marked with 
an asterisk are new to the ‘“‘ Forest Bed ”) :— 
Canis lupus ? Linn. *Gulo luseus, Linn. 
vulpes ? Linn. Ursus speleus, Blum. 
Machairodus sp. JSerox-fossilis ? Busk. 
‘elide (? genus). Trichechodon Huxleyi, Lank. 
*Martes sylvatica, Nilss. * Phoca, sp. 
IV.—Own tHe Pre-Camprian Rocks or Wrst AND CENTRAL 
Ross-SHIRE. 
By Henry Hicks, M.D., F.G.S. 
With Prrroptoe1caLt NoTEs. 
By T. Davis, F.G.S., of the British Museum. 
Parr II. 
Loch Maree and Glen Laggan (or Logan). 
OCH Maree runs roughly parallel with the strike of the beds of 
the Pre-Cambrian rocks, consequently there is no great thickness 
of these rocks exposed along its shores, and we do not find the same 
variability in their character, as in the area previously described. 
Along the S.W. shores the gneisses described in Notes 4 and 6 are 
most frequently met with, especially towards the western end; but 
about the Loch Maree Hotel, and eastward of this point, the gneisses 
described in Notes 7 and 8 are the prevailing types. 
[Nore 7.—Macroscopically appears to consist of a fine-grained 
admixture of felspar and quartz in bands with mica. The foliation 
in this case is not so distinctly dependent upon the mica, but is 
largely contributed to by the quartzo-felspathic bands. A thin 
section shows that the quartz in this rock is eminently crystalline, 
and forms continuous bands, which inclose the individual crystals or 
groups of felspar. It is exceedingly free from the microscopic 
cavities. It appears frequently as a rounded crystal inclusion in the 
felspar crystals. The felspar is reddish-grey in colour, and is much 
altered ; but from its peculiar striation and traces of reticulation, | am 
