* 
196 CORDEAUX: ADDRESS TO YORKSHIRE NATURALISTS, 
second on the authority of Mr. T. Sheppard, of Hull; one 
a hill-top near Barton-on-Humber ; also a pebble in situ, 18 & 
in the boulder-clay cliff of South Ferriby; and a third built 
a Saxon wall of the roth century at Irby-on-the-Wolds. The 
other erratics are undoubted indications of a much further extents 
to the south of the vale of York glacier than is generally supposed 
The downward progress of a glacier depends much on 
and smoothness of its bed. The movement is more rapid 
centre than on the sides, where the ice abuts on the flanking ™ 
The movement has been calculated at 64 inches in the four sume 
to its resting-place. 
immense crescentic terminal moraines, crossing the 
of York, mark the lines of the successive retreats and pauses of 
great glaciers before a slowly-altering climate. Between these 
soil is a very tenacious fine warp, probably the bed of an. 
lake, the water being dammed by the more southern ates 
sucking and holding power of tenacious glacier mud pe very 
curves of a great glacier. During the present autumn 
tunities of seeing some of the finest ice-fields and glace 
Northern Europe. Chief of these, the Svartisen, just 
Arctic Circle, descended majestically from an ice-fiel 
miles in length—a stream of solid ice, some hund 
thickness, and filling a broad valley. It was, ™ arr 
covered with new-fallen snow, and its fair white surface we 
parallel lines and curves of stones and rubble, es ) & 
to time, from the overhanging rocks ; ultimately, to 0” nd, of g 
lateral and terminal moraines. In places where the ‘bare thet 
perpetual sunshine of the long Arctic summer, has laid oe 
the colour is malachite green, and the walls of the are 
But no words, written or spoken, can give the faintest we oe 
Surpassing loveliness of the tints. At the same UMS he 
Staggered at the grandeur of the forces which have been ©” 
instruments in fashioning these northern lands. oes 
__ From an ice cave at the foot of the glacier ee a 
siderable stream of milk-white water, which SOOM O° cou 
iver entering the Fjord a mile below. ‘The intervenll8 ° =e 
*- 
