130 On the Climate of the Canary Islands. 



6th Sept.— The same spring - , ^ - 14.8 R. 



1st June. — Very copious springs, gushing out like 



waterfalls from the rocks beneath the mill of 



Gordaxuelo, near Realexo - - - - 13.3 

 6th Sept. — The same spring - - - - 14.1 



Up to the height of 2000 feet above the sea the tempera- 

 ture of the springs, generally, suffers scarcely any sensible 

 diminution ; consequently the mean temperature of the air 

 in ascending gradually approaches that of the springs. Above 

 2000 feet, and between that height and the commencement of 

 the forest region, the springs diminish considerably and rapidly 

 in temperature all round the island, as is shown by the following 

 examples : — 

 August. — ^Agua de las Mercedes, 2200 feet, in the 



wood of Obispo above Laguna, under gigantic 



laurels 11.2 R. 



Sept.- — Fuente de Vero, and Fuente de los Villanos, 



2800 feet - - - . - 10.6 



June. — A spring near the hermitage of Esperanza_, 



2100 feet 12.2 



August. — Fuente Guillen, a spring between Esperanza 



and Matanha, 2565 feet - - - 12.1 



May. — A copious fountain in the rocks above Realexo 



ariba, 2600 feet _ _ _ _ 11.9 



May and June. — A spring on the mountain of Ti- 



gayga, 2000 feet - - - - 11.9 



May and June — A spring on the left side of the Ba- 



ranco, leading to Rambla, 2000 feet - 11.7 



At the commencement of the forest region, therefore, the 

 average temperature of the springs may be considered as 11° R. 

 or 3° less than at the level of the sea. From that height to the 

 upper limit of the forest region, where the precipitation furnishes 

 a constant supply, the water in deposits differs little from the tem- 

 perature of the air : and above that region, the springs are too 

 few, and too inconsiderable, to preserve an independent tem- 

 perature. E. S. 



