National Geographic : 1892 Mar 21
The fabled "Phantom City." look like the ice-front of another glacier; the pinnacles of Muir glacier sometimes look like minarets. These appearances have given rise, by a considerable stretch of the imagination, to the so-called " Silent city," or " Phantom city," figured in some books which describe this region. This mirage is just the opposite to that seen in hot deserts. There the rays are bent up, making the image look as if it were reflected from the surface of water; here the rays are bent down; yet the bending is not sufficient to entirely separate the image from the object, but only makes the latter appear distended, as though it were made of rubber and had been stretched upward. We had rather less rain than we expected; about one day in three was rainy during July and August; September was much wetter. There were no thunder-storms, and usually the rain was in small drops. In August aurora were frequently seen, so frequently that I think they must have occurred every night; possibly all the time, although, of course, daylight would have masked them. Earlier in the summer the twilight, which lasted all night, would also have drowned them if they occurred. THE SURVEY.* A base line was measured off with a steel tape from A to B on the plateau on the western side of the inlet; here we found fairly even ground The base was measured twice; first from B to A, then from A to B. The two values obtained were 962.301 and 962.330 meters respectively. The length adopted was 962.32 meters, 1,052.8 yards. By means of small transits we then made a network of triangles and fixed the points A B, D, Camp, E, K, L, M, b4, c2. The maps were made entirely with the planetable. This instrument was set up at Camp, D, E, H, L,N, O,P,R,S,Tand V,for the general map. The map of * The instruments used in the survey were lent by the United States Coast and Geodetic Survey. They consisted of-1, a 30-meter steel tape, with which we measured the base line; 2, two small Casella transits, with 2l-inch vertical and horizontal circles, divided to half degrees and read ing by two verniers to minutes, which were used in the triangulation, in the measure of the motion of the ice, and in determinations of latitude ; 3, a planetable 14 by 18 inches, with which the maps were actually made. In addition, we had four aneroids, only one of which, however, was found to yield reliable results This one was used in determining the height of Vt and the height of the glacier near P.
1892 May 15
1892 Feb 19