LIST OF PLATES. 
PLATE I.. 
PLATE 2. 
PLATE 3 
PLATE 
PLATE 
PLATE 
PLATE 
PLATE 
PLATE 
PLATE 8.— 
PLATE II.— 
PLATE 12.- 
PLATE 13 — 
PLATE IN- 
FLATE IS. 
^Fig. I. — Lower and iriddle Jurassic beds, 8 miles south of 
— j Kampa dzong. 
^ Fig. 2. — Section from Kargchenjhao to Kampa ridge. 
— Diagrammatic section of Cretaceous beds of Kampa ridge. 
TFig. I. — Limestone cliff near Tso Lhamo. 
j Fig. 2. — Section on right side of stream about li miles above 
— Kampa dzong. 
Fig. 3. — Probable section through Kampa range at Dzongbiik 
La. 
■Southern slopes of ridge running west from Tuna. 
■The Tsangpo valley nt Cbaksam. 
The Kyi Chu valley below Lhasa. 
Northern arm of Yamdrok Tso. 
f Fig. 1. — Kangchenjhao and Chomoyumo from the north. 
( Fig. 2. — Western end of Kampa rid^e. 
TFig. I. — Kampa ridge, 7 miles east of Kampa dzong. 
(Fig. 2. — Middle Jurassic limestone near Lungma. 
— Tertiary beds in Kampa ravine. 
f Fig. J. — Folded Jurassic beds, 4 miles west of Gyantsc. 
(Fig 2. — Operculina limestone at Kampa dzong 
f Fig. 1.— Fault through northern ridge behind Kampa dzong. 
( Fig. 2. — Tertiary beds near Tuna. 
fFig. 1. — ActSEonella limestone. 
(. Fig. 2. — Lithothamnion limestone 
Photomicrographs of Kyi Chu granite. 
Geological map. 
