60 Scientific Intelligence. 
eighth and one hundred and tenth meridians of west longitude. 
About eighteen thousand square miles were surveyed, covering a 
section of country probably more generally elevated above the 
sea-level than any other within the borders of the United States. 
As an illustration of the uniform great elevation of extensive sec- 
tions of this region, it may be mentioned that one of the subdi- 
visions of the survey, in exploring an area of nearly three thou- 
day. e 
quantity and interest those of any previous year. ; 
he field of operations during the past season of the second di- 
however, that material has been collected for the mapping of an 
extensive region of country heretofore but little known; that the 
E 
vered and traced, interesting and valuable specimens of fossils, 
Indian relics and articles, illustrating the arts existing among the 
Indians inhabiting that region. Mr. Powell had, in former sur 
veys, discovered many ruins of towns and hamlets once occupied 
by the ancient inhabitants of the valley of the Colorado River; 
and during the past season many other such ruins have been 
found, some of their ancient picture-writings and many of their 
