388 PLANTS, SEEDS, AND CURRENTS 



11. Then follows a short discussion of the seashore plants of the 

 Azores, of which the most characteristic seem to be — Crithmum 

 maritimum, Euphorbia azorica (perhaps a form of E. pinea of South 

 Europe), Euphorbia peplis, Hyoscyamus albus, J uncus acutus, 

 Polygonum maritimum, Salsola kali, Silene maritima, and Spergularia 

 marina (p. 38 4 )?■ 



12. Under the head of " The Wells of Pico," in Note 36 of the 

 Appendix, the extensive soakage seaward of underground waters is 

 noticed; and evidence is adduced to show that this is a common 

 phenomenon in large islands, and that sometimes fresh- water thus 

 derived issues as submarine springs off the coast. On the great 

 cone of Pico there are no permanent streams and no springs, the 

 poorer inhabitants of the coast towns and villages mainly depending 

 on the slightly brackish water of wells sunk in the rubble behind 

 the beaches. Off the cone, in the eastern part of the island, perennial 

 springs occasionally exist high up the slopes of the mountains. 



1 Frankenia pulverulenta is also an Azorean shore plant which, however, 

 rarely came under my notice. 



