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 Myrtaeeous plants might 

 be introduced from the Philippines. The Metrosideros polymor- 

 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 su jested, 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. Abbot 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 Lucknow. 



E. terminalis comes from tropical Queensland and may suc- 

 ceed in other tropical countries." This completes Charles Xau- 

 din's list. 



Mr. Abbot 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. Xo 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 



