fact which I mentioned but did not fully consider in my theory (see Ice 
Age in North America, p. 61), viz: that there were remnants of a Iniried 
forest on the south end of Headland island, which is below the "dying 
glacier."' 
A slight modification of my theory, however, would meet this difficulty, 
namely, that the ice-stream coming down the west fork of the glacier 
was for a time predominant, and pushed along so far in advance of that 
which enters the east fork as to obstruct the drainage of ]\[uir inlet, and 
allow the accumulation of sand and gravel which wo now find above the 
forests. 
AVhile there is nothing in the way of supposing a slight subsidence to 
have occurred sufficient at least to carry down the buried forest on the east 
side below tide level many facts which have been brought to my observa- 
tion recently in England make me hesitate about bringing into the theory 
so large a cause for so small an effect. It has seemed to me that possibly 
those forests upon the east side, having grown upon an insecure founda- 
tion, may have slightly shifted their position, and that, as the inlet has 
been deepened \)\ the active erosive agencies at work, there maj' have 
been a slight slip of extensive portions of the soil upon the east side, 
so as to carrj' the buried forests below the sea level. It is possible,also, 
that this lowering of their level may have been brought about with little 
or no lateral movement. The occurrence of a bed of quicksand upon 
which the forest strata rested may have suffered the foundations to be 
undermined through the action of springs, and thus brought about a 
local sudsidence sufficient to account for all the facts. 
Mr. Cushing's presentation of evidence bearing upon the changeability 
of the conditions about the eastern sources of Aluir Glacier seems fully 
to justify his criticism of my remark that these forests may have existed 
before the Glacial period itself. In connection with further study of 
the region I wish attention might be directed as soon as possible to the 
glaciers which enter the western fork of the baj', that we might learn 
whether the changes taking place there are correlated with those upon 
the Muir glacier. G. Frederick Whight. 
Ohcrliri, Ohio, Ort. 10. 
PEPvSOXAL AXJ) SCIEXTIFTC' NKWS. 
TiiK rxiVKRSALr'rv (»K (loi.i). Almost cvcrv cul»ic yard of 
*i;rauit('. or in fact, of rock of any description, contains from mere 
traces to oftcMi ai)preciable <|iiantitles of metallic nold intermixed 
amongst the materials forming the rock. Also, it is a seieutitii- 
fact, and one which has been proven by many actual ex[)eriments, 
that, for every avoirdupois ton of water in the entire bulk of the 
ocean, there will average al tout two grains of gold. Oi'. in other 
words, there will he found about two grains ()f gold in the form 
of a chloride of gold, in every ton of sea water, whether tak»'M 
from the surface or at tlic bottom. And. tlicrerorc. there arc uii- 
