262 The Ohio Journal of Science [Vol. XIX, No. 5, 



Geographic Society in Washington and in that of the Director 

 of the expeditions at Columbus, Ohio. The negatives, for the 

 present, are filed in the Columbus office. 



No. 1. Temperature 220 C. (Corrected). Ill, N 49 E (Mag.) 



XXX, S 8 E. IX, N 79 E. 



Approaching the Valley from the northern extremity of the Great 

 Mud Flow, the first conspicuous fumarole was encountered about 200 

 yards north of the narrow neck at the easterly bend of the mud flow. 

 The hole was about 18 inches in diameter, on a fissure perhaps 100 feet 

 long, running east and west. The surface of the fissure was light 



Photograph by Jasper D. Sayre 

 THE STEAM FROM FUMAROLE 3. 



Fumarole 3 is located near the high mud mark under Station XI. The areas 

 around it are very much broken up, and highly colored. This photograph 

 shows the steaming fissure and its surrounding area. 



colored, while the throat had a hard brown incrustation. The gases 

 were emitted with considerable pressure, and were not condensed until 

 several feet from the vent. This region was visited July 13th, and 

 again on August 1st. No change could be observed; 220 C. was 

 registered both at the surface and five feet down in the throat. Photo- 

 graph 3769. 



No. 2. T. 205 C. Needle Peak, N 51 W. 112, N 16 E. IX, N 76 E. 

 This was a small dry hole in the mud flow, where it had turned 

 around the north end of Buttress Mountain and dammed Windy 

 Lake. It was about 100 yards from the River Lethe Canyon, and just 

 north of some sand knolls. The ground was strewn with partly charred 

 logs and was very dry and sandy. The hole was about one foot in diameter 

 and three feet deep, with a diagonal crevice two inches in diameter at the 



