PREFACKH. 
In marshalling the facts here set forth a narrative style 
has been attempted. This, owing to the many branches in 
certain subjects, has led to some small repetitions and to many 
cross-references in the index. Thus it may be useful to first 
read that which was written specially for the busy man, 
the “‘ RECAPITULATION,” page 178. This gives a brief summary 
of the more important facts, except those relating to the 
relative growth of native trees, a subject which stands suffi- 
ciently clearly by itself in these pages; and 18, moreover, 
discussed in a separate paper (New Zealand Institute, 1920). 
