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ENEMIES OF TREES. 
SYNOPSIS. 
I. METEOROLOGICAL. 
(a) Frost. 
(b) Snow. 
(c) Wind. Twist in timber. 
(d) Lightning. 
(e) Drought. 
(/) Rain. 
II. FIRES. 
III. SOIL. 
(a) Unsuitable soil. Alkali. 
(6) Sand encroachment. 
IV. PARASITES. 
(a) True Parasites (Mistletoe, &c.). 
(b) Hemi-epiphytes (Strangling Figs). 
(c) Fungi. 
(d) Weeds. 
V. ANIMALS. 
(a) Grazing. 
(b) Native animals. 
(c) Birds. 
(d) Insects. 
VI. MISCELLANEOUS. 
(a) Fumes from furnaces, &c. 
(b) Artificial lighting. 
(c) Destruction by aborigines. 
