During the summer of 1877 I remained in the 
office, superintending the publication of the Atlas of 
Colorado, and completing the other unfinished work of 
the previous year, - reports, notes, drawings, the model- 
time was devoted to the preparation of the T, Economic Map, 
the "General Geological Map," the "Geological Sections," 
and the "Panoramic Views." 
HAMIHG OF MOUNT HOLMES. 
One event of this year is especially noteworthy 
Due to my studies of the peculiar volcanic phenomena of 
Southern Colorado in 1875, which brought to the attention 
of geologists a new type of mountain building. Professor 
G. K. Gilbert, who spent the summer of 1877 in a study of 
the Henry Mountain# of Utah, named one of the mountain 
masses of the range after me, the main summit Mt. Holmes 
and a subordinate, somewhat detached summit the lesser 
ing of cliff dwellings, etc 
A large portion of the 
Holmes. 
^Mountain range /x named by Professor G. K. 
Gilbert after Professor Joseph Henry, First 
Secretary of the Smithsonian Institution. 
I 
