Some of the passengers felt uneasy, fearing another mighty tumble might occur immediately in front of us, and that the mass might shoot outward below water, and might come up beneath, or uncomfortably close to us. The captain, however, stood upon the bridge ready to send his ship rapidly backward should anything look untoward. The engines were kept in gentle motion holding our bow steadily toward the glacier precipice. The captain, by the way, thinks the Takou the most interesting of the approachable glaciers. The ice gathered was of great solidity. It did not break under an ice pick in straight cleavage, but irregularly, showing its peculiar characteristic of being formed, not from water simply freezing, but from snow compacted under irresistible pressure. Two chunks of perhaps each two tons weight lay between decks supplying the entire ship's wants for four or five days. It may have been imagination, but I thought this ice more agreeable for eating than that made by ordinary process. It was more friable and broke and crumbled in the mouth in shorter pieces and not in long spiculae as ordinary ice does.
We passed on our run close to several other huge glaciers, some of them running quite down to the water; among them the "Stephens" which though very large, reaches the sea in a slope and not with a perpendicular precipice. We, however, stopped only at the celebrated "Muir." We lay in front of it from 6 a.m. to 2 p.m.—a half hour in rather dangerous proximity, and then anchored a mile off for passengers to land and climb its banks. The Muir presents a precipice to the head of the inlet nearly 300 feet high and over a mile long. Two years ago it bent outward with a very decided convex front; last year it was nearly straight. Now it is a very open horseshoe. We took soundings when the Queen lay a thousand feet from the front and found under us 720 feet. It possibly shallows considerably close to the wall, say to 400 feet. The glacier is certainly over 200 feet high; this makes, with what is under water, 600 feet. But give it the low estimate of an average across the inlet of 400 feet. It moves steadily downward forty feet a day, and gradually recedes. Thus it will be found that it tumbles into the sea a mass of ice, 40 x 5280 x 400 feet, or of at least 84,000,000 cubic feet a day.
After wandering for several hours over the surface of the glacier, along a sort of granite road way varying in depth from a few inches up to very many feet thick lying upon it; among blocks of granite weighing tons brought down upon the solid frozen river; across narrow crevices, into whose depths we could look a hundred feet down, into pure ice of all tints of blue from the pearl blue of a southern sky to ultramarine and indigo—tints so beautiful that one involuntarily groaned in pleased admiration; along chasms where our iron-pointed alpenstocks were necessary to prevent a slip, which would have sent us down into glacial graves; looking over pinnacles, domes and valleys of ice in confused profusion; over grotesque forms, over which no one person could safely go, but a dozen attached to each other by ropes, with shoes iron-nailed, might with hazard venture. Then up and before us spread the mighty glacier, 25 miles by 30, fed by many smaller ones. Morains of rock lifted above the surface in long even lines running back for miles, showing the edge of each of the frozen rivers, which have united to make the mighty single one.
The theory explaining the medial moraines of glaciers, is that two or more glaciers come down the gorges and upper valleys of the mountain. Each of these gather up broken rock and mountain debris on their two sides. When two such glaciers meet and run into and form one, then the inner lateral moraines unite and are borne along by the enlarged glacier. As it flows these two morains, now become "medial," are apparently pressed upward to and upon the surface. This, however, is probably only apparent, for the ice melting under the summer sun's heat, simply leaves the rock debris on the surface.
The Muir is the result of several upper feeding glaciers. Each two uniting formed from their inner lateral moraines, one medial. Several medial ones are observable on the surface of the great glacier, some of them uniting lower down, when the bed of the icy stream becomes contracted—where the valley becomes narrow. Several medial moraines retain their individual line until the great precipice is reached. The mass of the debris forming a moraine is of comparatively small broken granite; not broken and rounded by glacial action, but simply irregular pieces thrown off from granite precipices high in the mountains by frost forces. Now and then a few rounded pebbles, and small boulders are seen, worn on the under surface of upper glacier streams. Quite a number of very large masses of granite are being borne down by the Muir moraines. One I estimated to weigh several tons. Its cleavage sides and edges were fresh and sharp as if it were just broken from its parent rock.
The medial morains on some of the glaciers seen at a distance, have a singular effect. They can be seen in long apparently parallel lines and seemingly close enough together, to be the walls of a long smooth road. A wag declared that one of them was the road from an Indian village to the little red school house in an upper valley.
After exploring the surface of the glacier, we found that the tide having reached its ebb, we could approach the foot of the ice-precipice. Three of us had approached it somewhat nearly before when the tide was but half out. We walked up the shingly shore through stranded icebergs of all sizes, and hundreds in number. Some were not larger than a barrel, others larger than a railroad car, and of all intermediate sizes. Now we threaded our way through a cordon of huge blocks as clear as crystal, from which we chipped with the spikes of our alpenstocks, chunks delicious to eat. Then we were among others of various tints, colored by the earthy matter caught by them when flowing near to or upon the valley bed. One mass weighing probably a thousand tons was resting upon a point so small as to be a mere pivot. I cut from it a smooth rounded cobble stone for a paper weight, and was glad when my task was finished, for I was somewhat uneasy lest the slight hammering might topple over the bulky mass.
We reached the foot of the glacier. Here the picture was wonderfully fine. The ice-precipice from which so many newly broken bergs had tumbled, was far more beautiful than when seen from several hundred yards away. We looked into grottoes many yards recessed into the frozen cliff. Here in one was every shade of blue; all tints of green were resplendent in another; and then the sun would discolor these shades, and weave them into the sweet tones which paint an opal's cheek. Now an upper member of a newly broken recess under the sun rays sparkled as a million diamonds, and then another looked like a mass of crystalized olive tints. From out of a deep grotto at the base of the cliff flowed a strong river, which had been pent within its icy house, and now reaching the free air bounded and rushed to join the mighty sea.
Since our arrival in the morning the tide had fallen fully twenty feet, taking away considerable support from the hanging mass, so that the fall of icebergs was almost continuous. The thunder while so close to a tumbling mass was terrific and sublime. The inlet was full of bergs, so that the ship in turning out had to pick its way carefully. How exquisitely beautiful they were as they glistened in the sun's rays, displaying their iridescent crystals! As we steamed out of the inlet among a scattered ice floe we thought we had seen all that a grand glacier could present. Imagine our surprise when we had gone about ten miles to find ourselves at the entrance to another inlet which was packed almost solidly with icebergs. With our glasses we could see the huge "Pacific glacier," about thirty miles away, with a precipice of ice 600 to 800 feet high and five miles long. Although it was quite three times as far from us as the "Muir", yet its icy front showed to us higher out of water. The inlet running up to it was literally packed with ice, into which no steamer, unless armored for Arctic seas, would dare to venture.
A passenger lately taken on, who had spent a season prospecting in this immediate neighborhood, assured us that the fall of ice from this glacier was absolutely continuous, and that masses would tumble a half mile long. He had seen one floating three miles long. He admitted he had no means of measuring it, and gave us the result of a rather hasty guess. He said it stranded at each low tide, but would be lifted at each flood and was by degrees broken up sufficiently to get out of the inlet. "Why," said this passenger, "the Muir is a baby by the side of the Pacific. For every iceberg coming from the one five hundred come from the other." The statement was credible, for while just above this inlet the strait had only scattered bergs, below it was almost a pack of ice. The majority of the icebergs, which had fallen from the Muir, were melted away before reaching the mouth of the Pacific inlet. Looking up this, the icebergs seemed almost in solid mass; of all sizes from a few feet broad, to others covering a quarter of an acre; and from a few feet in height up to twenty, thirty and forty. Out side of the inlet and below its mouth, monster masses were all about us, some of them hundreds of feet across and several fully fifty feet above water.