As, however, any description of the Park which omits the GRAND CAÑON would be like omitting Hamlet from the play, I will give you this quotation from Professor F. V. Haydon's report to Congress:— "No language can do justice to the wonderful grandeur and beauty of the cañon below the lower falls, the very nearly vertical walls slightly sloping down to the water's edge on either side, so that from the summit the river appears like a thread of silver foaming over its rocky bottom; the variegated colours of the sides—yellow, red, brown, white—all intermixed and shading into each other; the gothic columns of every form standing out from the sides of the walls with greater variety and more striking colours than ever adorned a work of human art.... A celebrated artist exclaimed, with a kind of regretful enthusiasm, that these beautiful tints were beyond the reach of human art.... After the waters of the Yellowstone roll over the upper descent, they flow over the apparently flat rocky bottom ... until near the lower falls, where the channel contracts, and the waters seem to gather themselves into one compact mass, and plunge over the descent of 350 feet in detached drops of foam as white as snow, some of the larger globules of water shooting down like the contents of an exploded rocket. It is a sight far more beautiful, though not so grand or impressive as that of Niagara Falls." The next morning we started back again by another route, on the other side of the Fire Hole River, and when we came opposite to "Hell's Half-acre," we saw great streams of boiling sulphur water pouring down the rocks from the cauldron I have already mentioned, into the river, where I am told the boiling water runs alongside the cold a long distance before mixing with it. The fish to be found in this and other lakes and rivers in the Park are quite uneatable, being wormy, and sulphurous in flavour. I am aware that I have utterly failed to convey anything like an adequate picture of what I have seen myself in this "region of wonder, terror, and delight." The geysers are said far to surpass both in number and in size those of Iceland or New Zealand. I must leave it to others to explain the physical causes which produce these phenomena. It is said by the learned that the entire region was, at a comparatively recent geological period, the scene of remarkable volcanic activity, and that its last stages are visible in these hot springs and geysers.