LIBRARY 
OF THE 
UNIVERSITY of ILLINOIS. 
THE 
AMERICAN GEOLOGIST. 
Vol. XIX. MAY, 1897. No. 5 
CHANGES OF LEVEL IN THE BERMUDA ISLANDS. 
By Ralph S. Tare, Itliaca, N. Y. 
(Plates XVI, XVII, XVIII.) 
CONTENTS. Page. 
Scope of the Article 293 
Conclusions Reached by Previous Observers 294 
General Features of the Islands 296 
Accumulation of the Base Rock 297 
Unconformity at the Top of the Base Rock 298 
Accumulation of the ^Eolian Beds 299 
Recent Subsidence 300 
Summary 302 
Scope of the Article. The actual field work upon which 
this paper is based occupied about two weeks in March, 1S96, 
during which time a large portion of the islands was exam- 
ined. In the course of this study some points in the history 
of the islands were developed, and it is this that gives excuse 
for the preparation of the paper. At the same time, the study 
also led to other conclusions which had previously been 
reached by workers in the field. Since the verification of an- 
other's work has a certain value, and since the statement of 
these other conclusions is necessary in order to make clear 
the bearing of the new observations, the article is made to 
cover the important facts in the development of the Bermu- 
das, so far as these are revealed by the topography and strati- 
graphy. Hence the new observations form only a part of the 
