[December, 
746 Analyses of Books. 
3 square miles examined, is estimated at 28 million tons. At 
Darangirri there is, in the area of 20 square miles forming the 
western half of the field, an available quantity of 76 million tons. 
At Myanoung, in British Burma, the explorations are not com- 
plete, but there is a coal-bed of the thickness of 10 feet, and 
there are bituminous shales, possibly indicative of petroleum. 
On the Quartzite Pebbles contained in the Drift ; and on their 
Derivation from an Ancient Land Barrier in Central Eng- 
land. By W. Jerome Harrison, F.G.S. With a Note by 
J. J. H. Teal, M.A,, F.G.S. (Reprinted from the “ Pro- 
ceedings of the Birmingham Philosophical Society,” vol. iii., 
p. 157). Birmingham : Herald Press. 
The author describes the lithology of the pebbles in question, 
the fossils which they contain, — chiefly Brachiopods, Lamelli- 
branchs, Crustacea, and Annelida, and their derivation. He 
shows that they are derived from the pebble-bed or conglomerate 
which forms the middle member of the Bunter Sandstone, or 
Lower Trias. He considers that the pebbles in question are 
among the evidences of an ancient ridge which ran across Cen- 
tral England, and during ihe Carboniferous times formed a barrier 
between the coal-fields of Leicestershire, Warwick, and South 
Stafford to the north, and those of Gloucester and Somerset to 
the south. This ancient land axis crops out in aline of points 
from the Malverns, running by the Caradoc, the Wrekin, the 
Lickey Hills, Dosthill, and the Hartshill Range, to Charnwood 
Forest. Mr. Harrison considers that this range once formed a 
coast line washed by the waters of the “ Midland Channel,” and 
that the pebbles have been thus rounded by marine atftion. 
Mr. Teal, in an Appendix, discusses the microscopic strudlure 
of specimens of quartzite collected by Mr. Harrison from the 
Lickey Hills, Nuneaton, &c. He concludes that these quartzites 
were originally sandstones, which have been converted by the 
deposition of secondary quartz. They have certainly not ori- 
ginated by partial fusion. 
