258 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 
EXPLANATION OF PLATES. 
PLATE 1. 
A. West Temple of the Virgin. Photograph by W. M. Davis. The view looks 
southeast across the Virgin canyon near Rockville. The broad Shinarump 
platform is seen in the immediate foreground and across the canyon. Be- 
yond it rises the red sandstone “Temple,” cut by deep vertical rifts. Half- 
way up from the Shinarump platform is the bench of sandstone that caps 
the Painted Desert shales. Landslide hummocks below this bench show 
that undermining is actively going on. 
B. “Rhinoceros head.” Photograph by W. M. Davis. A corner of the red Kanab 
escarpment, northeast of Toquerville. The view looks southeast from near 
Dry canyon, toward the extreme southwestern salient of Colob,—a mag- 
nificent red sandstone promontory with a tusk-like apex. 
PLATE 2. 
A. Up Dry canyon. Photograph by W. M. Davis. The view looks east. The 
cliffs and pinnacles in the distance are red Kanab sandstone. The head of 
Dry canyon is on the left. On the right rises the cuesta of Painted Desert 
shales, with its cap of hard sandstone. 
B. Anticlinal hill near Leeds. Photograph by W. M. Davis. Looking southwest 
over the town, one sees the western slope of the cigar-shaped anticlinal nose. 
On the left the entire Shinarump arch is preserved, but from the centre of 
the picture southward one sees only the western half of the breached anti- 
cline stretching off towards St. George. 
PLATE 3. 
A. The Hurricane fault-scarp near Toquerville. Photograph by W. M. Davis. 
Seen from the road to Virgin city, looking north. Here the fault has nearly 
died out. Against the vertical face of Aubrey limestone on the right can be 
seen the gently inclined layers of Moencopie shales of the downthrown side. 
B. The Hurricane cliff at Virgin canyon. Photograph by W. M. Davis. Looking 
southeast, one sees the canyon in the centre of the picture. The steep scarp 
marks the recent faulting along the Hurricane. On the uplifted side is a 
flat bench of lava over soft Moencopie shales. Just beyond this bench rise 
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