6 
pelago and Oceanica, are the Metrosideros and Xanthostemon. 
Of the latter, twenty-five species are endemic to Australia, ten 
in New Caledonia, and one (X. verdugonianus) in Mindanao. 
Indeed, it is probable that several useful Myrtaceous plants might 
be introduced from the Philippines. The Metrosideros poly mor¬ 
phia, named on account of its varying types, forms the most 
generally prevailing trees on the Hawaiian Islands between 1500 
and 5000 feet. Metrosideros vera is one of the iron woods of 
Molucca; Syncarpia laurifolia, now classed with the Metrosi¬ 
deros, is one of the most valuable shade trees of Australia. But, 
though all the dry capsular seeded forms of the Myrtaceae may 
prove valuable, I think enough has been suggested, and I will 
proceed to the discussion of the Eucalyptus, which undoubtedly, 
in the higher mountainous regions of Cuba, will be most success¬ 
ful; and some few species may prove valuable in the tropical 
lagoons near the coast. 
With the consent of Mr. Abbott Kinney, the author of a 
work on the Eucalyptus, I make use of much of the data he has 
collected that directly applies to the introduction of this family 
of trees into tropical countries. Prof. Charles Naudin says: 
‘ ‘ The introduction of the Eucalyptus into tropical countries 
has up to now been only moderately successful; more especially 
have they failed where the heat is almost uniform and the 
humidity of the atmosphere very great. Speaking generally, the 
Eucalyptus requires a season of rest, either by reason of a fall 
in the temperature or a prolonged dry season. There are, how¬ 
ever, a few species which seem to have succeeded in the tropics, 
which we note in the following descriptions: 
E. abergiana possibly can be acclimated in tropical countries. 
E. capitellata succeeds in wet sand, and may be used where 
the climate is not too unfavorable. 
E. resinifera is one of the Eucalyptus which best succeeds 
in tropical climates. It has been successful in India at Kucknow. 
E. terminalis comes from tropical Queensland and may suc¬ 
ceed in other tropical countries.” This completes Charles Nau- 
din’s list. 
Mr. Abbott Kinney states: 
E. calophylia succeeds in the moist tropics of Zanzibar, but 
its leaves are very deficient in oil. 
This seems rather a small list, but it by no means follows 
that out of one hundred and fifty species known that many have 
been tried. Even in our experiments with sixty or seventy 
species in California, we have great surprises. No doubt from 
the extraordinary divergence from types we find in seedlings, in 
an extended trial some would be better adapted to these appar¬ 
ently adverse conditions, and owing to the early production of 
