lithsonian Repoit, 1900. — Sollas 



Plate 



Fig. 1.— Distribution of Rates of Increase of 

 Temperature, with Descent. 



The ratcsi taken from " Britisli Association Report," 

 oxcept in soiitli of Ireland. 



Fig. 2— Distribution of Land and Sea, and of Thickness of Deposits 



OF Cambrian System. 



Dotted lines indicate distances of 100 and 200 miles from shore. 



