Botany and Zoology. 119 
these islands, the trap presents the columnar form which is represented 
in the accompanying cut (drawn by Capt. Stannard) of : 
feet long and twenty feet high. vigor ) of @ section forty 
three miles, are rarely more than sixty feet in height, and are composed 
of columns which are usually pentagonal or hexagonal in form, and 
hat distinctness in their columnar structure, 
aracterize the basalt.of the Giant’s 
Ill. Borany anp ZooLo6y. 
1. Notes on a Tour to Madeira, Teneriffe and Cape Verds, from 
the Journal of the Voyage of Dr. J. R T. Vocet to the Niger, 
Jour. Bot., No. Ixiii, March 1, 18 
and twenty-five species) ; three hun 
to Madeira and the Canaries ; and 
neighborhood of Gibraltar (where four hund 
one hundred and seventy to the 
red and fifty-six have been 
European (and these 
Mediterranean) species, indi not more than one hun- 
dred and seventy occur in 
westward, and the Canaries to the sou 
the Mediterranean plants seen in Madeira, 
