100 



DISTRIBUTION OF BRITISH PLANTS 



Genista tinctoria 



pilosa 

 Cytisus scoparius 

 Ononis arvensis 

 Ilex Aquifolium 

 Rhamnus Frangula 

 Berberis vulgaris 

 Tilia grandifolia 

 parvifolia 



Metres. 

 40—1200 

 0—1200 

 0—1200 

 0—1200 

 0—1000 

 0— I 200 

 0—1400 

 100—1000 

 0—1000 



English Feet. 



131—3936 

 0—3936 

 0—3936 

 0—3936 

 0—3280 

 ~" 0—3936 

 0—4592 



328—3280 

 0—3280 



In looking over this list, it must be borne in mind that 

 the sea levels on the north and south coasts of France 

 respectively (De Candolle includes Holland and the N. of 

 Italy) have very different climates, amounting in mean 

 annual temperature to 10 degrees (60° — 50°) ; so that spe- 

 cies growing at the same level may nevertheless be such 

 as are adapted to different climates. This will apply more 

 particularly to the lower limits. The snow-line may be 

 stated at nearly 9000 English feet, but varying consider- 

 ably in different places. 



The Flora Sicula of Presl divides the island of Sicily 

 into seven ascending regions, according to absolute ele- 

 vation.* 



* In the Companion to the Botanical Magazine, No. 2., are extracts 

 from a Memoir on the Vegetation of Etna, by Dr. R. A. Philippi. 

 " Etna, in the opinion of Dr. Philippi, does not admit of more than 

 three regions of vegetation. 1, The cultivated region, extending from 

 0—S,300 feet. 2. The woody region, from 3,300 — 6,200 feet. 3. 

 The alpine region, commencing at 6,200 feet." At Palermo, the 

 mean temperature is 65°. The greatest heat during twenty years was 

 105°; the extreme cold, 34°. The mean quantity of rain above 

 20 inches, and the average number of rainy days 65 in the year. At 

 Catania, the mean temperature is 68°. (See the work mentioned, for 

 particulars respecting the vegetation of each region.) 



