250 Scientific Intelligence. 
(1.) Degree of resistance to frost. This depends on the age of 
the plant (older trees standing best), on the amount of moisture — 
in its surroundings (dry places most favorable), and on the degree — 
of shelter from the wind. Grown-up trees did not suffer at all | 
during the cold winter of 1879-80 at Antibes, although the tem- 
perature fell as low as 15° F., and the monks of Tre Fontane, 
., and this appears to be in accord with expe 
even strong limbs, but the stem and main branches remained 
unhurt, pushing forth new shoots and foliage in the spring. Pro- 
great extent and provided also, that the new wood was W 
matured and the spot of growth a dry one.” : 
2. e drainage of swamps by Eucalyptus. According to 
Baron von Miiller, it was through the Archbishop of Melbourne, 
that plantations of this tree were first established for diminishing 
the miasmatic exhalations of the Pontine marshes. The 1olow 
of your kind and thoughtful presentation in the vigorous growth 
ir of 
_ But at Gaéta, trees oa planted by Royal order in 1854, and 
in 1878 one of them measured eleven feet in girth, and was 100 
feet high. It may be remembered that another species of en 
genus, E. amygdalina, surpasses this one both in rapidity 
growth, and in the height which it ultimately attains. be 
e author deals to some extent with the medicinal properties 
of the products of the tree, and has also some remarks upo? the 
No. 4, seasoned 8 months, broke with a total weight of..- 819 Ibs. 
* 6, ¥ S y ars, “6 té “ce 51039 + 
No. 15, 66 20 years, “a “ “ 5.1830 a 
In some experiments with wood of the same dimensions, Mr. ei : 
kett found that when the weight was suspended in the middle, — 
both ends free, the average was 712 Ibs., being very much less 
