40 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
way, and entering some of the ravines to see the relation of the instru- 
sive granite to the limestones. ‘There were several light showers in 
the early afternoon, drifting northeastward. After their passage we 
climbed one of the spurs near Painters ravine, whence a fine view was 
opened along the face of the range. The next day we turned north- 
ward, and then crossed the range eastward by the southern of the two 
roads hereabouts through a low pass. After continuing eastward 
nearly to the base of the range, we turned southwestward up a dry val- 
ley, at the head of which, near the granite, there was a small spring. 
From this point we walked up to the range crest on July 25, gaining 
extended views in all directions. Sevier lake was well seen to the 
southeast. Several good springs occur in the granite part of the high- 
land; they are indicated by copses of bright 
green aspens, as well as by many well-worn 
paths of horses and cattle leading to them. 
The lower valleys were nearly all dry. 
There are good sized pines and firs on the 
higher slopes, but many of the trees are 
dead, and there are few or no young ones 
to replace them. In the evening we turned 
ges 16.— A weathered granitic hack towards Deseret, making a dry camp 
youlder in Painters ravine, = Fa JAR 
House range; height of boul- for the night on the plain in brilliant moon- 
der, 9 feet. light. The next afternoon we reached 
Deseret and there the party disbanded. 
The Structure and Subdivisions of the House Range. Gilbert visited 
this range in 1902 and gave some description of it at the meeting of the 
Geological Society of America in Washington in the following winter; 
but no published account of his observations has yet appeared. ‘The 
range as thus described seemed to offer so many features character- 
istic of a typical fault-block mountain, well dissected, that I deter- 
mined to have a sight of it. As Gilbert’s report will include a map by 
Johnson and a fuller discussion of the rock series and structure than 
could be made from our brief visit, the present account will be limited 
to matters bearing particularly on the place that the range should have 
in a systematic classification of mountains. 
The range trends north and south, with a length of forty or fifty miles 
and a breadth of ten or twelve. As a whole it is an east-dipping mono- 
cline of palaeozoic strata, presenting a moderate slope to the east and 
a strong escarpment to the west. ‘There is a large intrusion of granite 
in its southern part. The highest summit, Swazy peak, rises next north 
of Antelope Spring, near the middle of the range; the desert basins on 
