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were always in great abundance along the streams and on the margins of 

 the ponds. The sycamores were by far the most interesting growth and 

 were found abundantly in quarries B and C. They were more abundant 

 and much larger in the old parts of the quarry and seemed especially well 

 adapted to this peculiar soil: in fact, they seemed to be able to grow ^^ith 

 little or no soil except the limestone powder in the crevices. Fig. 3 shows 

 a tree about eight inches in diameter growing out of the apparent solid 



Fig. 3. 



floor of quarry C. Fig. 4 shows a tree of about four inches in diameter 

 growing out of a crevice between strata in the wall of the same quarry. 



In the older parts of the quarry and around the margins, where con- 

 siderable amounts of surface soil has been carried in. the dicotyledonous 

 plants are very abundant. 



