Further Observations on Heath Association. 117 
the number of years that have elapsed, since burning, up to the 
present time (1914). The areas in question are as follows:— 
F 1. Burnt June 1913 ; situated on slope in valley D ; aspect 
S.W. 
F 2. Burnt in April, 1912; situated on slope in valley C f 
aspect S.W. 
