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



No. 28. T. 216 C. X, S 55 E. IX, N 67 E. 



This was a long line of steamers, one hole of which showed a tem- 

 perature of 216 C. Others registered 196 C. and 161 C. The main 

 vents were 100 feet apart, closely similar in appearance. They were 

 surrounded by numerous steaming cracks which stood at 100 C. 



No. 29. T. 329 C. IX, N. 24 E. Baked Mountain, S 60 E. Ill NO. 

 This was a long line of acid fumaroles. After many trials, we 

 secured the highest temperature, 329 C. They were richly colored 

 small holes. The whole line was slightly raised above the general level 

 of the Valley floor. We began at one end of the line and after recording 

 several crevices at 100 C., found higher temperatures as we approached 

 the middle of the line, finally reaching the maximum of 329 C. Some 

 of the other crevices recorded 313 C., 294 C., 259 C. Toward the 

 other end of the line the temperature fell again to the boiling point. 

 Photographs 3740, 4141. 



No. 30. T. 304 C. Ill, N 9 E. Baked Mountain, S 62 E. IX, 



N35 E. 



We found here a large gasser situated on a long fissure. Many 

 small cracks in the vicinity were emitting steam at 100 C. There 

 were no conspicuous deposits. The temperature at the surface was 

 304 C. Photograph 3742. 



No. 31. T. 210 C. Baked Mountain, S 60 E. IX, N 20 E. Needle 



Peak, N 71 W. 



Two large columns of gas, which registered 210 C. and 205 C., 

 were conspicuous among numerous minute hissing steam jets. The 

 area was not conspicuously colored, being covered with wind-blown 

 ash. Photographs 3743, 4142. 



No. 32. T. 323 C. Baked Mountain, S 64 E. IX, N 5 E. Needle 



Peak, N 64 W. 



The immense volume of steam issuing from this fumarole first 

 drew our attention to this one. It was the most conspicuous vent in the 

 low r er (north) half of the mud flow. No other fumaroles were near and 

 its large irregular mouth, which rose 15 to 20 feet above the Valley 

 level and emitted a huge column of rolling steam and gas, made it a very 

 striking vent. The hot active area was so large that it was impossible 

 to do more than work around some of the outer crevices, leaving the 

 temperature in the center of the column to conjecture. In the subordi- 

 nate fissures we found temperatures of 225 C., 304 C., 220 C., 304 C., 

 323 C. and 294 C. See page 274. 



No. 33. T. 432 C. Baked Mountain, S 62 E. IX, N 15 E. Needle 



Peak, N 62 W. 



The main body of the stream flowing from the Valley under Knife 

 Peak cuts across the area of No. 33. An enormous quantity of rolling 

 steam and vapors, which had attracted our attention from the first, 



