CONTENTS.

PART 1.

PAGES.

1-134

135-144

General Report of the Geological Survey of India for the year 1937.

By A. M. Heron, D.Sc., F.G.S., F.R.G.S., F.R.S.E., F.R.A.S.B.,

F.N.I., Director, Geological Survey of India

The Hindu Kush Earthquake of the 14th November 1937. By A. L.

Coulson, D.Sc., D.I.C., F.G.S., F.N.I., Superintending Geologist,

Geological Survey of India

On Khoharite, a New Garnet and on the Nomenclature of Garnets. By

Sir Lewis Leigh Fermor, O.B.E., D.Sc., F.R.S.

Provisional Statistics of some of the more important Indian Minerals

for 1937. By A. M. Heron, D.Sc., F.G.S., F.R.G.S., F.R.S.E.,

F.R.A.S.B., Director, Geological Survey of India .

Miscellaneous Note-

Quarterly Statistics of Production of Coal, Gold and Petroleum in

India including Burma : October to December 1937

145-156

157-159

.

160-161

163-208

209-237

238-246

PART 2.

The Geology of Gujarat and Southern Rajputana. By B. C. Gupta

and P. N. Mukerjee, B.Sc. (Cal.), M.Sc. (Lond.), 1.C., Assistant

Geologists, Geological Survey of India. (With Plates 1 to 5)

Tin-Tungsten Mineralisation at Mawchi, Karenni States, Burma. By

J. A. Dunn, D.Sc. (Melb.), D.I.C. (London), F.N.I., F.G.S., Petro-

logist, Geological Survey of India. (With Plates 6 to 12)

Tin-Tungsten Mineralisation at Hermyingyi, Tavoy District, Burma.

By J. A. Dunn, D.Sc. (Melb.), D.I.C. (London), F.N.I., F.G.S.,

Petrologist, Geological Survey of India. (With Plates 13 and 14).

Two Fossil Dicotyledonous Woods from the Garo Hills, Assam. By

K. Ahmad Chowdhury, Forest Research Institute, Dehra Dun.

(With Plates 15 and 16)

On some Fossil Fish-scales from the Inter-trappean beds at Deothan

and Kheri, Central Provinces. By Sunder Lal Hora, D.Sc.,

F.R.S.E., F.N.I., Assistant Superintendent, Zoological Survey of

India, Calcutta. (With Plates 17 and 18)

Miscellaneous Notes-

Tirodite, a manganese amphibole from Tirodi, Central Provinces

Quarterly Statistics of Production of Coal, Gold and Petroleum in

India including Burma : January to March 1938 .

Bismuthinite and bismutosphärite from Manbbum. (With Plate 19)

Apatite and allanite in barytes from Manbhum

303-397

The Mineral Production of India and Burma during 1937. By A. M.

Heron, D.Sc., F.G.S., F.R.G.S., F.R.S.E., F.R.A.S.B., F.N.I.,

Director, Geological Survey of India
The Western Margin of the Eastern Ghats in Southern Jeypore. By

H. Crookshank, B.A., B.A.I. (Dub.), Superintending Geologist,

Geological Survey of India. (With Plates 20 to 24)

Miscellaneous Note-

Quarterly Statistics of Production of Coal, Gold and Petroleum in

India and Burma : April to June 1938

398-434

435-436

PART 4.

437-482

483-513

Are the Equidæ reliable for the Correlation of the Siwaliks with the

Cænozoic Stages of North America ? By Guy E. Pilgrim, D.Sc.,

F.G.S., with an Appendix by A. T. Hopwood, D.Sc., F.L.S.

A Seismological Study of the Baluchistan (Quetta) Earthquake of May

31, 1935. By K. R. Ramanathan, M.A., D.Sc. and S. M. Mukherji,

M.Sc., Colaba Observatory, Bombay

Contributions to the Geology of the Province of Yunnan in Western

China. (10) The Distribution, Age and Relationships of the Red

Beds. By J. Coggin Brown, O.B.E., D.Sc., M.I.M.M.

Earthquake Shocks at Paliyad in Kathiawar. By H. Crookshank, B.A.,

B.A.I., D.Sc. (Dub.), Superintending Geologist, Geological Survey

of India

Miscellaneous Note-

Quarterly Statistics of Production of Coal, Gold and Petroleum in

India and Burma : July to September 1938

514-578

579-595

.

LIST OF PLATES, VOLUME 73. .

PLATE 1.-Fig. 1.-Aravalli schist country, south-west of Kundanpur, Jhabua

State.
FIG. 2.-View of Aravalli quartzite country, N.E. of Virpur, Balasinor

State.
PLATE 2.–Fig. 1.-Deccan trap country, Samoi, Jhabua.
Fig. 2.-General view of Aravalli quartzite ridges, Umria, Bariya

State.
PLATE 3.-Fig. 1.--Aravalli quartzite (dip-slope), Hadaph river-section, Umria,

Bariya State.
Fig. 2.-Low-dipping Aravalli slaty and quartzitic bands, south of

Mekhar, Godhra.
PLATE 4.--Fig. 1.-Much jointed Aravalli quartzite, Edalwara, Bariya State.

FIG. 2.-Weathering of granite, Kothamba, Lunavada State. PLATE 5.-Geological map of Gujarat and Southern Rajputana. PLATE 6.-Fig. 1. -Cassiterite (C) interstitial to wolfram (W). Quartz (Q).

P. S. 252. X 54. Fig. 2.-Cassiteritic (C) and molybdenite (M) interstitial to wolfram (W). Bakelite (B). P. S. 251. Crossed nicols.

X 54. Fig. 3.--Wolfram (W) partly enclosing a tourmaline crystal (T) in

quartz (Q). P. S. 243. X.54. Fig. 4.-Schcelite (dark grey), replacing wolfram (light grey). P. S.

231. PLATE 7.–Fig. 1.-Wolfram (W) crystal replaced by schcelite (S). Cassiterite

(C) and quartz (Q). Bakelite (B). P. S. 251. Fig. 2.-Quartz (Q) replacing wolfram (W). A little pyrite (P). P. S. 236.

x 54. FIG. 3.-Pyrite (white) veinlets in quartz (Q) and wolfram (W). P. S.

232 X 54. Fig. 4.--Pyrite (P) veining tourmaline (T), and both replaced and veined by chlorite (C). P. S. 239 B.

X 54.
PLATE 8.-Fig. 1.-Pyrite (P) and chalcopyrite (C), veining arsenopyrite (A).
Quartz (Q). P. S. 164.

X 28.
FIG. 2.--Arsenopyrite (white) veined by chalcopyrite (grey) and

carbonate (black). P. S. 164. X 180.
Fig. 3.- Arsenopyrite needles in chlorite (dark grey); the latter

replaces quartz (lighter grey) and galena (white). Pyrite

(P). P. S. 236. X 54. Fig. 4.--Sphalerite (S) veining and replacing arsenopyrite (A). Also

chalcopyrite (C) and carbonate (Ca). P. S. 242.

54.

X 28.

X 84,

PLATE 9.--Fig. 1.-Quartz veins in sphalerite. P. S. 173.

x 40. FIG. 2.–Starnite (S) and galena (G) which veined stannite but is

altered in part to cerussite (Ce). Wolfram (W). P. S.

166. Oil immersion. X 420. Fig. 3.-- Molybdenite flake (M) in bismuthinite (B) and quartz (Q),

the bismuthinite replacing the quartz along the molybde-
nite. Note the strong difference in reflectivity between
adjacent areas of bismuthinite. P. S. 175.

X 54.
Fig. 4.-Intergrowth of bismuthinite in galena. Crossed nicols. P. S.

235. X 54. PLATE 10.-Fig. 1.-Galena vein (white) in cassiterite (C). Quartz (Q). P. S.

235.

X 180.
FIG. 2.-Chalcopyrite (C) partly altered to chalcocite and covellite,

and stannite (S) vein along cleavage in galena. P. S. 166.

x 235.
Fig. 3.-Zoning in cassiterite (thin section). Mic. slide 24690.

X 24.
Fig. 4.--Tourmaline (T) replaced by muscovite (MI) and chlorite (Ch)

in cassiterite (C) and wolfram (W). Mic. slide 21681.

x 24. PLATE 11.–Fig. 1.—Cassiterite replaced by interstitial felspar. Mic. slide 24680.

X 24.
Fig. 2.-Cassiterite replaced and veined by beryl. Mic. slide 24687.

X 24.
Fig. 3.-Beryl replaced along its cleavage, at walls of scheelite vein.

Mic, slide 24685. x 24.
Fig. 4.-Scheelite replacing platy carbonate. Mic. slide 21653.

X 24.
PLATE 12.--Fig. 1.--Mica veins (M) in cassiterite (C). Note how one of them

stops at the border of scheelite (S) after wolfram, and its position in the latter occupied by clear scheelite. Tour

maline (T). Mic. slide 24688. x 24.
Fig. 2.- Tourmaline (T) and cassiterite (C) veined by lepidolite (M).

Mic. slide 24698. X 24.
Fig. 3.-Relic quartz in platy carbonate. Mic, slide 24090.

x 24. Fig. 4.–Platy carbonate. Mic. slide 24696.

x 24. PLATE 13.–Fig. 1.-Wolfram veining muscovite (M) which appears also to be

interstitial to coarser wolfram (W). Quartz (Q). P. S.

268. X 54. Fig. 2.-Wolfram (light grey) brecciated and veined by quartz

(dark grey). P. S. 268. X 54. FIG. 3.-Cassiterite (dark grey) replaced by wolfram (grey). Quartz vein to left. P. S. 266.