312 Wisconsin Academy of Sciences, Arts, and Letters. 
which had a grayish color similar to those found on the lower 
parts of the most of the other islands. There were many speci¬ 
mens of a low species of Opuntia. Lichens seemed to be abun¬ 
dant on the vegetation. 
Gardner Island/Near Hood Island. 
This one of the Gardner Islands is situated about a mile off the 
north shore of Hood Island. The water in Gardner Bay, be¬ 
tween the two islands, is quite shallow, so it is likely that the 
two islands have been connected at some past time. The island 
is quite small, and is made up of very old lava, some of which 
has broken down in places forming a light covering of soil mixed 
with small lava fragments. The east and south sides are rather 
flat and sand beaches occur along the shores on these sides. The 
remainder of the island is rough, however, and the shores are 
bordered by tall cliffs. A small bay is surrounded by these on 
the north side. 
Low bushes of Cryptocarpus pyriformi occur in several places 
near the shore. The only trees on the island are those of Bur- 
sera graveolens and Opuntia galapageia. Bushes of Cordia 
lutea, Lantana peduncularis, and Prosopis dulcis are quite com¬ 
mon. 
Hood Island. 
Hood is the most southern island of the group, being located 
five miles further south than Charles Island, thirty-six miles 
west of it. It is also one of the smaller and lower of the islands 
as its greater diameter is about eight miles and its highest point 
has an elevation of 640 ft. So far as was observed, the shores 
are high and rocky on all sides but the northeast where there are 
long stretches of sand-beach and low rocky shore. The sides 
slope up gradually from the shore at Gardner Bay, to a some¬ 
what flat central region on which there are several rocky hills,, 
some of which rise possibly a hundred feet above the surround¬ 
ing country. There is no distinct crater on this island. There 
is, however, a broad flat plain, about half a mile south of Gard¬ 
ner Bay, which may be the floor of a crater, the surrounding 
hills being all that is left of the rim. 
The highest point is towards the southwest side of the island, 
and consist of a flat-topped hill of lava. A considerable amount 
