Having refreshed ourselves with a bite to eat and a little stimulant, we resumed the climb. After several hours of the most exhausting work I have ever performed we pulled our weary limbs upon the narrow ridge, but a few square yards in area, which constitutes the apex of the Grand Teton. A little below, on the opposite side of a steep-walled gap which divides the top of the mountain into two parts, we saw the singular enclosure of stones which the early white explorers found there, and which they ascribed to the Indians, although nobody has ever known who built it or what purpose it served. The view was, of course, superb, but while I was admiring it in all its wonderful extent and variety, Hall, who had immediately pulled out his binocular, was busy inspecting the Syx works, the top of whose great tufted smoke column was thousands of feet beneath our level. Jackson's Lake, Jenny's Lake, Leigh's Lake, and several lakelets glittered in the sunlight amid the pale grays and greens of Jackson's Hole, while many a bending reach of the Snake River shone amid the wastes of sage-brush and rock. "There!" suddenly exclaimed Hall, "I thought I should find it." "What?" "Take a look through my glass at the roof of Syx's mill. Look just in the centre." "Why, it's open in the middle!" I cried as soon as I had put the glass to my eyes. "There's a big circular hole in the centre of the roof." "Look inside! Look inside!" repeated Hall, impatiently. "I see nothing there except something bright." "Do you call it nothing because it is bright?" "Well, no," I replied, laughing. "What I mean is that I see nothing that I can make anything of except a shining object, and all I can make of that is that it is bright." "You've been in the Syx works many times, haven't you?" "Yes." "Did you ever see the opening in the roof?" "Never." "Did you ever hear of it?" "Never." "Then Dr. Syx doesn't show his visitors everything that is to be seen." "Evidently not since, as we know, he concealed the double tunnel and the room under the furnace." "Dr. Syx has concealed a bigger secret than that," Hall responded, "and the Grand Teton has helped me to a glimpse of it." For several minutes my friend was absorbed in thought. Then he broke out: "I tell you he's the most wonderful man in the world!" "Who, Dr. Syx? Well, I've long thought that." "Yes, but I mean in a different way from what you are thinking of. Do you remember my asking you once if you believed in alchemy?" "I remember being greatly surprised by your question to that effect."