52 PROCEEDINGS OF THE ACADEMY OF  [Vol. LXXV 
60. Half a mile above Station 58, porphyry slide. 
61. Slide west of 60, across the gulch and higher. 
62. Old miners’ camp at foot of hill whereon are Stations 58, 
60, 61. 
63. (This and the following up to 85, are in and about the am- 
phitheater, p. 71, diagram, Text fig. 4). Small slide at point of 
mountain at southwest point of amphitheater, about 3 miles south 
of Silver Bell road gap (Nelson’s ranch). 
64. North slope of same in boulders of gulch, foot of peak. 
65. Bed of dry wash below 65. 
66. Near top of range, above 64. 
67. Between two highest peaks, in gulch boulders at a low 
68. A short distance further up than 67. 
69. Silver Bell Pass, north side of the highway, reddish quartz- 
70. South side of the same. 
71. Northwest side of quartzite butte, opposite Station 59. 
72. North end of the range opposite Rillito village 1 mile, north 
side of peak. 
73. 200 yards east of the same (bones very abundant). 
74. Base of mountain, below Station 66, in a gulch bank slide. 
75. 200 yards up same gulch. 
76. Foot of next peak east. 
77. Below 76, in boulders. 
78. South side of the peak at the north end of the range, op- 
posite Stations 72, 73. 
79. Quarter mile east of same. 
80. Mountain at northwest point of amphitheater, near top, in a 
quartzite slide on the south side. 
81. Cliffs above Station 68. &e. 
82. Dry wash at Twin Cacti camp. 
83. West point of amphitheater, south side, in boulders. 
84. Higher up, under shoulder of the peak, cliffs. 
85. Southeast end of flat-topped mountain, in a slide. 
86. Catt Mountain, northwest side, above spring and herder’s 
cabin. 
87. North side of a mountain on south side of the amphitheater 
(Limekiln Camp). 
89. 2 miles southeast of Mile-wide Copper Co. camp. 
90. Southwest slope of same mountain as No. 87. 
(Robles Hills, an eastern outlier of the Roskruge Range). 
91, 92. At the dolomite quarry. 
93. Northeast side of the same hill, the malpais slide. 
94. North side of middle hill. 
95. East side same hill; in malpais. 
