468 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Apr. 27, 
which very considerably exceeds that of the same bone in either 
Rh. tichorhinus or R. hemiteechus, whilst it is quite in proportion 
with that of the metacarpal above described. 
I have carefully surveyed the other bones in the Oreston Col- 
lection, but think it unnecessary to say more concerning them than 
that they seem to me to be all in accordance, as regards pro- 
portions, with the metacarpal and metatarsal, hoping that what I 
have ventured to remark concerning those bones and the teeth will 
be enough to establish the proposition with which I started. 
Discussion. 
The Cuarrman remarked that at one time the Oreston Rhinoceros 
was referred to R. tichorhinus, but that Buckland, although men- 
tioning the Rhinoceros, never gave it a specific name. The Chair- 
man also said that the Oreston fissures were not caves, but mere 
fissures which had been filled in; an entire skeleton occurred at one 
spot, and the animal must have fallen in. 
Mr. Borp Dawxiys had been struck by the non-tichorhine character 
of the Oreston specimens some years since. He confirmed Prof. 
Busk’s determination, and remarked that five British species of 
Rhinoceros are known, namely:—l. R. Schleiermacheri, from the 
Red Crag of Suffolk (inthe Miocene at Darmstadt); 2. R. etruscus, 
from the Forest Bed = R. Merckii (Von Meyer); 3. R. megarhinus 
(Christol) = R. leptorhinus (Cuv.); but the latter name includes also 
R. etruscus and R. hemitechus; so that the adoption of De Chris- 
tol’s name gets rid of a difficulty ; 4. R. hematechus ; and, 5. R. trcho- 
rhinus = R. antiquitatis (Blum.). 
Prof. Busk, in reply, stated that Oreston was a fissure-cavern, 
and noticed the successive openings in 1816, 1821, and 1826. He 
did not agree with Mr. Boyd Dawkins in preferring the name 
megarhinus to Cuvier’s leptorhinus. He did not know of the occur- 
rence of two species of Rhinoceros at Oreston. 
2. On two Guetssorp Serres in Nova Scorra and New Brunswick, 
supposed to be the Kaurvatents of the Huronian (CAmBRIAN) and 
Lavrentian. By Henry Yourr Hinp, Esq., M.A. 
(Communicated by Professor Ramsay, F.R.S., F.G.S8.) 
[Puate XXX.] 
ConTENTS. 
I. Introduction. ; 
TI. General Sketch of the Distribution of the supposed Huronian and Lauren- 
tian Series. 
III. Sequence of Formations. The Upper Silurian. The Lower Silurian, in- 
cluding the Gold-bearing Rocks. 
IV. The Cambrian, or Huronian Series. 
V. The Laurentian Series. The Hozoon canadense(?). Cape-Breton Island. 
VI. Relation of the Gold-districts to the Gneissic Areas. 
