Sketch of Dr. A. R. C. Sehvyn. — Ami. 5 
Forbes and also Ramsay went, to determine if possible the 
points in question and to settle them on the spot. Selwyn was 
at work on the side of Crib-goch, on the top of a crag, and 
his well-known shrill shout soon reached Ramsay who discov- 
ered him, and later in the day they all joined forces and com- 
pared notes and finally put matters straight at Glaslyn. 
Many a knotty problem in Cambrian geology was discuss- 
ed by these masters of geolog}' in the lovely vale of Beddgel- 
ert where Selwyn was located, or at Llanberis which Ramsay 
and Forbes made their headquarters. In 1849 Selwyn com- 
pleted the survey of the rock formations lying between the 
Snowdon range on the north and Ffestiniog and Tremadoc 
on the south, and turned his attention to the Lleyn peninsula 
from Pylheli. At Aber, and as late as December of the 
same year, Ramsay and Jukes joined Selwyn and had a very 
pleasant meeting. The following spring saw the same trio at 
Merchlyn in North Wales, where many conferences were 
held on critical points touching sundry lines to be drawn as 
boundaries between different geological formations. 
Selwyn was an alpinist or mountain climber of no mean 
order. From the experience gained when in the Swiss Alps 
it was a pleasure and no effort for him to climb the peaks and 
scale the heights of the Snowdon range, not to speak of the 
numerous crags of the region surrounding the same which he 
traversed in his geological explorations. Later in life, in the 
Mount Serle region of South Australia, and in the district 
surrounding mount Alexander as well as in the Canadian 
Rockies he was a most intrepid climber. Ramsay states that he 
was "out on the hills with Selwyn, one day (4th of May 1850) 
as far as the cliffs under Carned Llewelyn and down by Mel- 
ynllyn and Llyndulyn." Besides good work done on that day 
"Selwyn executed a most perilous feat of cliff-climbing: a 
slip and he would have been slain." Later while in Canada 
and during the Rocky mountain excursion in connection with 
the meeting of the British Association for the Advancement 
of Science in 1884, Dr. Selwyn had a most narrow escape for 
his life at the mouth of the tunnel near the base oi mount 
Stephen. His keen eye detected the loosening mass of lime- 
stone above ; his agility and wonderful presence of mind led 
him to jump on adjoining timbers thus saving his life on 
this occasion. 
