4 
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St ea ee 5 ES 
Physical Theory of Secular Changes of Climate. 977 
present, the quantity of ice on the southern hemisphere might 
be expected to be greater and that on the northern less than 
now 
Forest flourished 10,000 or 12,000 years prior, the winters were 
in perihelion, and there was a fall of sea-level, due in all likeli- 
hood to the preponderance of ice on the southern hemisphere. 
But this is not all: the strata which underlie the buried Forest 
] 
level, which took place during the latter part of the Postglacial 
period, are just what should have taken place on the supposi- 
tion that they were the result of those astronomical and phys- 
leal agents which we have been consi ering. us, imme- 
"Wight belong to a period 50,000 years prior to the Carse-days; but I am now sat- eee 
_ isfied that the ot beaches both belong to the period of the Carse-clays, as Pro- oe 
fessor ikio 9 : : es Ae 
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