COMPOSITION OF VARIOUS TREES 177 



The prickly ash is a native of East and West 

 Indies, North America, and Japan, and was 

 introduced into England in 1773. 



* .4f, Jl. ^i, .y. v- 



TT' TS" TT TP ^P 



To conclude in the words of Dr. Munro, " the 

 ashes of all plants contain very nearly the same 

 substances, though by no means the same quantities, 

 or in the same proportions to the weight of the 

 entire plant. And in the same way the ashes of 

 different parts differ amongst themselves not in 

 the substances they contain, so much as in the 

 quantities and proportions of these substances." 



N 



