On Spheroidal Jointing in Metamorphic Rocks. 345 
Switzerland gneiss-rock of similar porphyritic character to that 
which I have above described. In the neighbourhood of the 
Todten-see, to the east of the sources of the Unter-ar-Glacier, 
and between it and the Grimsel Hospice, and again below the 
Handeck, on the road to Guttannen, there are extensive rounded 
surfaces, which, in many cases, proved on examination to be pre- 
cisely similar in character to those above described in India. 
There was the same concentric shell structure, and, in places 
where the outer layers were broken into, there were to be seen 
disclosed underneath new surfaces, which only required the action 
of rain and the fan-like streams which spread over these rounded 
slopes to produce a high degree of polish. Owing to the fact 
that, at the time when I crossed, the weather was foggy and 
threatening, and a foot or so of fresh snow lay on the ground, my 
examination was hurried and incomplete, and I am unable to be 
more exactly specific in my references, but of this I am fully 
satistied, that while minor tracks of glaciers, such as striz, and 
possibly true roches moutonnées do occur in this neighbourhood, 
the major features are not due to glaciers, but are to be attributed 
to the concentric shell structure of the rock itself. 
In none of the authorities to whose writings I have been able 
to refer can I find any hint of this, but, on the contrary, the 
rounded slopes are referred to as a proof of the former extent and 
size of the glaciers. Thus, Mr. J. Ball, in his Alpine Guide,* 
has written :— 
“ The geologist will observe with interest the traces of glacial action 
that are not only apparent in the neighbourhood of the Hospice and on 
the rocks surrounding the lakes, but even up to and above the summit 
of the Pass, indicating by the direction of the furrows that the vast mass 
of ice that once filled the head of the Valley of Hasli must have flowed 
over the Grimsel Pass towards the Valais. Neither will he fail to 
remark the contrast between the rough and jagged outlines of the upper 
ridges, that have never undergone the planing action of the glacier, with 
the condition of those parts which lay below the level of the ancient ice 
streams.” 
Here there is no recognition of the existence of any innate 
structure to account for the rounded outlines, all being set down 
as the work of ancient glaciers. 
I believe it possible that some of the “domes arrondis polis et 
* Central Alps, 1866, p. 81. 
