"We passed along the bank of a lovely little lakelet, sleeping in seclusion in the shade of towering evergreens, by which it is sheltered from the roaring tempests. It is near the divide, and on its pebbly shore some members of our party unfurled the Stars and Stripes, and christened it Mary's Lake, in honor of Miss Clark, a young lady belonging to our party." This lake appears on Jones' map for the same year as Summit Lake. Everts is said to have passed it in his wanderings, but there is no reliable evidence to that effect. _Mirror Lake_ (8,700)--G: 12--1885--U. S. G. S.--Characteristic. _Obsidian Lake_ (7,650)--E: 6--1885--U. S. G. S.--Characteristic. _Riddle Lake_ (7,950)--N: 8--1872--U. S. G. S.-- "'Lake Riddle' is a fugitive name, which has been located at several places, but nowhere permanently. It is supposed to have been used originally to designate the mythical lake, among the mountains, whence, according to the hunters, water flowed to both oceans. I have agreed to Mr. Hering's proposal to attach the name to this lake, which is directly upon the divide at a point where the waters of the two oceans start so nearly together, and thus to solve the unsolved 'riddle' of the 'two-ocean-water.'"--Bradley.[CP] This was a year before Captain Jones verified the existence of Two-Ocean-Pass. [CP] Page 250, Sixth Annual Report of Dr. Hayden. _Shoshone Lake_ (7,740)--M-N: 5-6--1872--U. S. G. S.--From Shoshone, or Snake River, which here finds its source. This lake was first named De Lacy Lake, after its discoverer. The Washburn Party (1870) appear to have named it after their leader. In 1871, Doctor Hayden, failing to identify its location, and believing it to be tributary to the Madison River, renamed it Madison Lake. It is this name which appears on the first map of the Park and in the Act of Dedication, where the west boundary of the Park is described as being "fifteen miles west of the most western point of Madison Lake." In 1872, when the correct drainage of the lake was discovered, the name "Madison Lake" was transferred to its present location (See "Madison Lake"), and its place supplied by "Shoshone Lake." The Act of Dedication is therefore misleading, and it is necessary to know that "Madison Lake" of the Act, is "Shoshone Lake" now, in order to understand the true location of the west boundary of the Park. In changing the name from "De Lacy" to "Shoshone," Prof. F. H. Bradley, of the United States Geological Survey, took occasion to reflect severely and unjustifiably upon De Lacy's work in mapping the country.[CQ] [CQ] Page 24, Sixth Annual Report of Dr. Hayden.