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moraine matter, the like of which he had seen in the Alps, not 
to the retreat of the glaciers after the above period, but to 
their retreat when, after the great submergence following the 
ice-sheet period, glaciers had formed in the valleys. The 
enlarged river-channels mentioned by Mr Kingsley were, in 
his opinion, not due to floods in the ordinary sense of the 
word, but to the rivers themselves having once been much 
greater than now, as they might be expected to have been 
towards the end of the glacial epoch. He had investigated 
these large river channels in most districts of Great Britain, 
and in a considerable part of Northern and Central Europe. 
Mr O. FisHErR was disposed to think that evidence of the 
ice-sheet period might be obtained even in so flat a country 
“as Cambridgeshire, in certain singular contortions and dis- 
turbances of the drift, and superficial deposits, which he could 
only explain by the pressure of a great mass ot een? Hie 
thought that the absence of shells in many of the drifts ren- 
dered it unlikely that they were marine, and was disposed to 
consider that the numerous ice-marks which he had seen in 
the East of England belonged to an earlier period than those 
in the West.. 
New Fellow elected: J. B. Lez, B.A., Sidney College. 
November 25, 1872. 
The PrestpeNT (PRoressoR HumPuRy) in the Chair. 
Communications were made to the Society : 
(1) On the appearance of an extra digit on the hind 
limbs and then on both fore and hind limbs in two 
successive generations ; and its bearing on the theory 
of Pangenesis. By Mr N. Goopmay. 
The facts which had come within his personal knowledge, 
and on which he submitted some remarks, were the following : 
