574 



that do not belong to the Peak of Teneriffe^ but which grow 

 at the indicated heights on the mountains of the neighbour- 

 ing islands, are placed between two parentheses. An S. 

 (Smith) is added to the new species, which will be published 

 by Messrs. von Buch and Smith. A cross placed at the end 

 of a word marks the superior limit of a plant, that at which 

 it ceases to grow. 



I shall mention some other ideas, for which I am indebted 

 to the communications of Mr. von Buch, and which will 

 serve to rectify what I have stated in the second chapter of 

 this Narrative. I eagerly seize every opportunity of rec- 

 tifying this work from the report of learned persons, who 

 have visited the same places, and who have remained in 

 them longer than myself. ff The Canarian pine (vol. i, p. 

 268) is certainly a new species, till now unknown to the 

 botanists of Europe. The dragon-tree (ib. p. 142) does not 

 appear to belong to the East-Indies, as Linneus believed; 

 it is found wild near Iguesta, 170 or 200 toises above the 

 level of the ocean. The thorny plant of Lancerota, which Mr. 

 Broussonet had taken for a sonchus (ib. p. 236 note), is the 

 prenanthes spinosa. The volcano of Lancerota, which I had 

 judged to be 300 toises high from angles which I took when 

 under sail (ib. p. 82), is the Corona, the elevation of which, 

 according to an extremely accurate barometrical measure- 

 ment, is 292 toises. The height of the town of Laguna which 

 had never been exactly determined (ib. p. 120 ; and vol. ii, 

 p. 178), is 264 toises. No circular wall of lava prevents en- 

 tering the crater of the Peak of Teneriffe on the northern and 

 western side. What I said of this wall, and the analogy be- 

 tween the summit of the Peak and that of Cotopaxi (vol. i, p. 

 169), does not appear to be accurate. No subsequent ob- 

 servation has confirmed the assertion of Mr. Broussonet (ib. 

 p. 235), that the island of Gomera contains a nucleus of gra- 

 nite and mica-slate; but Mr. Escobar, a learned Spanish 

 mineralogist, has found in the island of Fortaventura a block 

 of primitive syenitic rock. It is a mass, the basis of which 



