Fig. 2. 





Impression of five fingers and five toes of an Amphibian of the 

 Lower Carboniferous Age, from the lowest Carboniferous beds in 

 Nova Scotia— an evidence oi the fact that the number five was 

 already selected for the hands and feet of, the enrliest known land 

 vertebrates, and that the decimal system of notniu,.., with all that 

 it involves to man, was determined in the Palaeozoic Age. The upper 

 figure natural size, the lower reduced. 



83 



