a7id the Distribution of Heat over the Globe. 
Buddleia globosa pass the winter in the open ground, and 
without shelter. 
4ithly^ In France, on the western coasts of Normandy and Brit- 
tany. In the Department of Finisterre, the arbutus, the pome- 
granate-tree, the Yucca gloriosa and aloifblia^ the Erica Medi- 
terranean the Horte^man the FucJisian the Dahlian resist in open 
ground the inclemency of a winter which lasts scarcely fifteen or 
twenty days, and which succeeds to a summer by no means 
warm. During this short winter, the thermometer sometimes 
falls to 17°.6. The sap ascends in the trees from the month of 
February ; but it often freezes even in the middle of May. 
The Lavatera arborea is found wild in the isle of Glenans, and 
opposite to this island, on the coi^tinent, the Astragalus Bajon- 
ensisn and the Laurus nohilis f. 
From observations made in Brittany for twelve years, at 
St Malo, at Nantes, and at Brest, the mean temperature of the 
peninsula- appears to be above 56°.3. In the interior of France, 
where the land is not much elevated above the sea, we must de- 
scend 3° of latitude in order to find an annual temperature like 
this.^ 
It is known from the researches of Arthur Young that in 
spite of the great rise of the two isothermal lines of 53°.6 and 
55°.4 on the western coast of France, the lines of culture (those 
of the olive, and of the maize and vine,) have a direction |1 quite 
opposite, from S.W. to N.E. This phenomenon has been as- 
cribed §, with reason, to the low temperature of the summers 
• Knight, Trans. Hort. Soc. vol. i. p. 32. In 1774, an Agave flowered at 
Salcombe, after having lived twenty-eight years without being covered in winter. 
On the coast of England^ the winters are so mild, that orange trees are seen on 
espaliers, which are sheltered, as at Rome, only by means of a matting. — H. 
•j* * * § Bonnemaison, Geogr. Botan, du Depart, dn Finisterrcn ( Journal dc Botan. 
tom. iii. p. 118.) 
$ Travels in France, vol. ii. p. 91, 
II The line which limits the cultivation of the vine, extends from the embou- 
chure of the Loire and of the Vilaine, by Pontoise, to the confluence of the Rhine 
and the Moselle. The line of the olive trees commences to the west of Narbonne, 
passes between Orange and Montelimart, and carries itself to the N.E. in the di- 
rection of the Great St Bernard, — H. 
§ Decandolle, Flor. Fran^. 3d edit. tom. ii, pi. viii. xi. Lequinio, Voy. dam. 
le Jura, tom. ii. p. 84.-.-9L 
