LAMPLUGH : SHELLY MORAINE OF THE SEFSTROM GLACIER. 237 
Nevertheless the instance was instructive, in showing how readily 
shells and other beach-material are incorporated \^'ith glacial 
deposits when they come within reach of moving land-ice. It was 
difficult, in some of the sections, to tell where the raised beaches 
ended and the moraine began. 
VON POST GLACIER. 
Another tide-water glacier that we \dsited in Ice Fiord was 
the splendid Von Post Glacier at the head of Temple Bay 
(PI. XXXVI.). The sea-front of this glacier is about 2-i- miles 
wide, and rises to nearl}- 300 feet above water. A large-scale 
(50W0) plan published by Prof. De Geer in the " Guide de 1' 
excursion " shows that the glacier has been in slow retreat since 
1883. Before then, it had fallen back nearly a mile from an 
earher maximum, as indicated by its lateral morames which 
extend for about 1| mile bej^ond its present front. Its terminal 
moraine is submerged under the waters of the inlet ; but the lateral 
morames line botli shores of Temple Ba\\ and their internal com- 
position is clearly revealed in wave-cut cliffs. 
As seen in the cliff-sections, 10 to 50 feet high, the lateral 
moraines have a homogeneous structure. They are composed 
of rather sandy red clay, sufficiently compact to be traversed by 
vertical joints and to break down from the cliffs in big slices, 
after the fashion of our British boulder-clays. On both sides of 
the bay we landed at the foot of these cliffs which were strongly 
reminiscent of similar cliffs known to me on the coasts of North- 
east Yorkshire, the Isle of Man, and other parts of our Islands. 
We examined some parts of the moraine that had been exposed 
by the recession of the ice since 1883. 
The claye}^ matrix was studded with numerous boulders of 
varied size, many of them worn and highly glaciated, and of 
diverse composition, including man}' igneous and metamorphic 
rocks, along with grey and red sandstones, conglomerates, chert. 
Carboniferous limestones and other sedimentary rocks. The end 
of the glacier hes in a region of grey Carboniferous strata, with no 
older formations visible in the neighbourhood ; but it is known 
that more ancient rocks crop out to the northward, among the 
ice-fields of the interior ; and it is e^^dent that the glacier has 
transported most of the material of its moraines, including the 
red clay and the igneous and metamorphic boulders, from its 
concealed bed and from its upper basin. The absence of shells 
