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Botanical Climatology—Comparative Note as to the Epochs of 
Vegetation in different Countries. By M. Avcuste pr Saint 
Hrnarre. | 
Berne desirous of comparing the vegetation of the tropics 
with that of northern countries, I took advantage of the close 
of last summer and beginning of autumn, to pay a hasty visit 
to Norway and the Scandinavian chain. Although my pro- 
gress was very rapid, it enabled me, notwithstanding, to rec- 
tify some of the notions I had formed respecting the distribu- 
tion of plants in these countries, and the influence which cli- 
mate exercises in that distribution. Two days only having 
elapsed since my return to Paris, I am unable to give a full 
account of my observations to the Academy, which, however, 
will be introduced into a work of some extent with which I 
am now engaged ; I shall therefore confine myself at present 
to a brief indication of the comparative epochs of vegetation 
in different countries. 
In a memoir I read to the Academy many years ago, and 
which has probably not been without benefit to botanical geo- 
graphy, I stated, that after having left at Brest, on the Ist April, 
the peach-trees without leaves or flowers, I met with them at 
Lisbon, eight days later, entirely covered with flowers, and 
the same thing was observed with Cercis, many species of La- 
thyrus, Vicia, Juncus, &c.: that on the 25th, at Madeira, the 
peaches were fully formed and the wheat in ear; lastly, on 
the 29th, at Teneriffe, the harvest was commenced, and the 
peaches were fully ripe. In the journey which I have just con- 
cluded, 1 may be said to have noticed the vegetation in an in- 
verse sense. On the 10th of August the oat-harvest was com- 
pleted ix the vicinity of Orleans; on the 23d it terminated be- 
tween Beauvais and St Omer; on the 3lst between Ham- 
burg and Lubeck ; on the 2d September, cherries were still 
on sale in the Copenhagen market; on the 27th the oat-har- 
vest was finished in the country around Christiania ; and from 
the 10th to the 18th I always observed it in progress between 
that town and Trondhjem in the 64th degree. It would be 
natural to suppose that, in returning from the latter town to 
Christiania, I should find the same harvest completely finished ; 
