7 8 CONTAINED IN DIFFERENT KINDS OF WOOD. 
ig) Acanthopanax innovans, (Araliaceae) 8.40g 
S. et Z. 
20) Juglans mandshurica, Maxim. (Juglandaceae) 6.g85 
21) Phyllostachys nigra, Munro. (Gramineae) 6.234 
We see, therefore, that the Coniferæ are comparatively poor 
in wood-gum, and Ternstrcemia and Melia are also poor. 
Cupuliferas are richer, Juglans, Magnolia, Cladrastis, Acantho¬ 
panax, etc. are still more so. 
