326 Wisconsin Academy of Sciences, Arts, and Letters. 
region. This species was brought to this island many years ago 
by the tortoise hunters who made a temporary settlement here, 
and who introduced it among other domesticated plants. They 
were planted along the trail, leading into the settlement, by 
Captain Thomas Levick of Chatham Island, on one of his period¬ 
ic visits to this place. He hoped to permanently mark the trail 
by this means, but judging from the difficulty we had getting 
around these thickets and finding the trail again, his method of 
marking it was rather too effective. They grow so thickly that 
they have driven out the smaller vegetation in places. 
The country around 650 ft. elevation is heavily forested with 
trees of Bursera graveolens, Piscidia Erythrina, Pisonia flori- 
bunda, and Zantlioxylum Fagara. This forest is open in places 
and the ground is covered with occasional bushes and ferns. 
Above 700 ft. elevation the forms which occur abundantly on the 
lower parts, disappear. The forests above this are made up of 
large trees of Pisonia floribunda, Psidium galapageium, Scalesia 
pedunculata, and Zantlioxylum Fagara, the last of which forms 
trees 25-30 ft. high, usually heavily covered with mistletoe. The 
undergrowth is usually dense in these forests and is composed 
largely of bushes of Erigeron tenuifolius, Psychotria rufipes, 
Tournefortia rufo-sericea, and several species of ferns and herb¬ 
aceous plants. Epiphytes are common, consisting of ferns and 
orchids, Ionopsis utricularioides. Conditions similar to the 
above, continue to an elevation of 1,000 ft. as high as this side of 
the island was explored. From a tree at this elevation, the coun¬ 
try appeared to change but little for several miles further in¬ 
land. 
We visited this place during July, and as it was the last time 
that we expected to stop on this island, we made a rather deter¬ 
mined effort to get farther into the interior than we had done be¬ 
fore. We hoped to follow the trail in as far as the old settlement 
where it is reported that water can be found, and where there 
are a number of domesticated plants growing which are suitable 
for food. We expected to camp at the settlement and try to 
work inland from there. We lost the trail at 1,000 ft., however, 
and had to turn back as our supply of food and water was not 
sufficient to justify us in going farther. The only evidences of 
former habitation found, was a number of lime trees near where 
we lost the trail. We learned afterwards that these were but a 
short distance away from the settlement, but as everything was 
