Note J — JOURNAL

[Footnote J: Dr. P.V. Hayden, geologist in charge of the U.S. Geological Survey, first visited this region in the summer of 1871—the year following the visit of the Washburn party, whose discoveries and explorations are recorded in this diary. Dr. Hayden, on his return, graphically described the various wonders which he saw, but had very little to say concerning the mud volcano. This fact was the more inexplicable to me for the reason that the Washburn party thought it one of the most remarkable curiosities to be found in that region, and I was greatly surprised to find that Dr. Hayden made so little allusion to it.