286 
Proceedings of the Boyal Society 
measuring 32x 18x14 inches, imbedded in the clay about 15 feet 
from the surface. This boulder had not been moved out of its 
original position, and there were remains of Balani on various parts 
of the surface. I dug round it, and heaved it out of its bed, and 
found that the whole under side of it was covered with a close, 
thick crust of entire Bcdani , the points of which were sticking down- 
wards into the soft clay beneath, showing clearly that they must 
have grown upon the stone, before it was dropped into its muddy 
bed. Other instances of the same kind were observed by me. I 
conclude, therefore, with regard to some of these boulders at least, 
that Balani grew on them before they came to be lodged in the clay 
(probably when they lay on some shore) and that afterwards they 
had got encrusted with ice, and being floated off, had dropped to the 
bottom when the ice about them melted.” 
Mr Jamieson, in a footnote, adds — “ I believe the species of 
Balanus on the under side of the boulder above-mentioned was 
B. balanoides of Darwin’s monograph, which is a species that lives 
only between tide-marks. If this is correct, then, it could scarcely 
have grown on stones lying in water so deep as is indicated by the 
shells in this clay, and its presence could be explained only by some 
such theory as I have suggested. It would be an interesting fact 
should the Balanus on the upper surface prove to be of a deep-water 
species, and those on the lower of a tidal one.” 
REMARKS BY MR MILNE HOME . 
After presenting the Seventh Boulder Report, and giving a 
verbal account of its principal contents, Mr Milne Home, with the 
permission of the Council, read the following remarks, bearing on 
the objects of the Committee : — 
First . — In reference to further explorations, I entirely concur 
in the opinion of Professor Heddle, given in the Report, that 
the boulders most deserving of being sought for and studied are 
those perched at great heights, and especially on the ridges and tops 
of hills. (An example of one of these “ perched blocks,” as described 
in last year’s Report, was shown by a diagram on the walls.) 
It is quite certain that boulders in such positions had been put 
there and left there by the transporting agent (whatever that was) 
