4 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 66 
During the investigations and collecting, numerous photographs, 
some of which are here reproduced, were taken by Dr. and Mrs. 
Walcott, of geysers and hot springs, and of deposits made from 
the waters through evaporation and organic agencies. 
The collections were brought in to the various camps on pack 
Itc. 4—Nearer view of cone of Lone Star Geyser, showing outer appearatice 
of deposit. Photograph by Walcott. 
horses and buckboard, and subsequently packed for shipment at 
Fort Yellowstone and Yellowstone. Material assistance was afforded 
by the cooperation of the Acting Superintendent of the Park, Col. 
L. M. Brett, U. S. Army, and officers of the United States Engineer 
Corps who are in charge of the maintenance and development of the 
park roads and trails. 
