16 G. K. Gilberi—The Colorado Plateau Province. 
In column 8th the word rain when italicized signifies hard | 
rain; when in capitals it signifies VERY HARD RAIN, or rain 
descending in TORRENTS. It will be perceived that rain gen- 
erally accompanies hurricanes. In four of the cases I find in 
the published reports no mention of rain, but it is presumed 
that this is simply an oversight, since in most of the other cases 
rain is only incidentally mentioned. In all the investigations _ 
of Redfield and Reid the circumstances upon which they in- — 
sist as specially important are the direction and force of the © 
wind ; and it is only by consulting the extracts from the log- — 
books which they have furnished us, that I have discovered — 
any mention of accompanying rain. It is believed that tropical — 
hurricanes never occur without rain, and generally the rain is 
described as descending in torrents. 
Further remarks upon the preeeding table are reserved for a — 
future article. In preparing the materials for this article, I 
have been assisted by Mr. Edward S. Cowles, a graduate of — 
Yale College of the class of 1878. ’ 
Art. II.—The Colorado Plateau Province as a Field for Geologi- 
cal Study ; by G. K. Ginpert. 
I. Definition and Description of the Province. 
In the Mississippi Valley and “the Plains” the strata are 
almost undisturbed and lie nearly level. They have, indeed, 
been lifted above the parent ocean, and in part raised to a height 
of thousands of feet, but broad areas have moved together and 
all flexu ave been gentle. There are no traces of the fold- 
ings which characterize the Appalachian region. The preva- 
lent features of wd are plains and hills. 
From the western edge of the Plains to the Pacific Ocean 
the characteristic features are mountains. The strata are bent 
and broken, and upturned at all angles. The typical structures 
are structures of displacement. ithin this region of t 
disturbance is a restricted area of comparative calm. Disloca- 
tions of strata are not unknown in it; indeed, they are of fre- 
quent occurrence; but they are less frequent, less profound, 
and less complex, than in the surrounding region of mountains. 
Its mountains are few and scattered, and its typical eg 
form is the table or plateau. It is called the Colorado Plateau 
province, 
This region of ones was crossed by many lines of early 
exploration, and the salient features of its topography were 
erik y numerous observers. The first writer who called 
attention to the extent of the district, and colligated the north- 
