TWO:Westward and westward went our travellers. From the Missouri River, the train crept gently up the slope of the Rocky Mountains, till it halted to take breath at the summit of the Pass, more than eight thousand feet above the level of the sea. Then, speeding on over the Laramie Plains, down into the great basin of Utah, winding through the green carpet of Echo Ca?on, skirting the shores of Great Salt Lake, shooting like a sunbeam over the wastes of the alkali desert, climbing the Sierra Nevada, darting through the snow-sheds and tunnels, descending the western slope to the level of the Pacific, it came to a halt at Oakland, on the shore of San Francisco Bay. The last morning of their journey our travellers were among the snows on the summit of the Sierras; at noon they were breathing the warm air of the lowlands of California, and before sundown they were looking out through the Golden Gate upon[Pg 46] the blue waters of the great Western ocean. Nowhere else in the world does the railway bring all the varieties of climate more closely together.His voice died away. The Curate was not actually shaking his head, but there was upon his features an expression of incredulity, the like of which the Doctor had not seen before upon a human face, for it was the incredulity of a man to whom all arguments against the incredible are in themselves unbelievable. It was a grotesque expression, and with it there went a pathetic fluttering of the Curate's eyelids, a twitching of his lips, a clasping of small white hands.