292 Wisconsin Academy of Sciences, Arts, and Letters. 



The floor of the crater is 400 ft. below the rim, and was exam- 

 ined near the west end, in the vicinity of one of the active vol- 

 canoes. Here were found patches of Sporobolus indicus cover- 

 ing considerable areas in places while other arOas were covered 

 with Gnaphalium luteo-album, the gray color of which caused 

 them to stand out prominently when tlie floor was viewed from 

 the rim. There were also occasional specimens of an arbores- 

 cent species of Cereus, and low stunted specimens of Opuntia 

 myriacantha. An occasional tree of Zanthoxylum Fagara was 

 seen, usually close to the crater's wall. There is a considerable 

 growth of stunted bushes in places consisting mostly of: Clero- 

 dendrou molle, Dodonaea viscosa, Euphorbia equisetiformis, and 

 Lipochaeta laricifolia. There were brakes of Pteris aquilina var. 

 esculenta in one place, but outside of this, ferns are few at this 

 end of the crater. 



The northwest side of the mountain seems to be covered with 

 grassland, which is much drier than are the south and southeast 

 sides. At least it appeared to be as far down on this side as we 

 could see from the top of the mountain. The soil on the rim of 

 the crater was also much dryer on this side than it was on the 

 southeast side. 



The dry region is confined largely to the broad flat plain at 

 the base of the mountain at this place. As near as could be de- 

 teiTnined it does not extend above an elevation of 150 ft. Above 

 this many of the mesophytic forms appear, and there is a large 

 amount of frutieose lichen on the vegetation, indicating a greater 

 humidity. The transition region forms a narrow belt along the 

 base of the mountain, the upper limits of which reach to an ele- 

 vation of about 350 ft. The lower part of the moist region is 

 covered with dense forests of Saponaria, and Scalesia trees, 

 while on the upper part the vegetation consists mostly of bushes, 

 and small trees with open spaces between them at intervals. 

 Near the upper limit of this region, around an elevation of 1,500 

 ft., there are only low bushes. The grassy region extends from 

 1,500 ft. nearly to the top of the mountain. 



Barrington Island. 



Barrington is situated ten miles southeast of Indefatigable, 

 and twenty-six miles west of Chatham Island. It is one of the 

 smaller islands of the group, and it is of low altitude the most 



