363 
BIBLIOGRAPHY OF YORKSHIRE GEOLOGY, 1918-19. 
By T. Sheppard, M.Sc, F.G.S. 
1918. 
Anon. — Products of Yorkshire Coals. The Naturalist, September, 
pp. 273-4. 
A River of the Coal Age. The Naturalist, September, p. 274. 
The Driffield Museum. Nature, April 25th, p. 150 ; The 
Naturalist, June, pp. 178-9. 
• Ammonite Nomenclature — New Genera : Mr. S. S. Buckman's 
Opinion : The Field Geologist [Notice of A. E. Trueman's Paper]. 
The Naturalist, June, pp. 179-181. 
Yorkshire Type Ammonites [Notice of S. S. Buckman's 
Monograph]. The Naturalist, October, p. 305. 
Natural Gas [Notice of T. W. Woodhead's Paper]. The 
Naturalist, October, p. 306. 
Obituary : William Lower Carter, M.A., F.G.S. Born August 
9th, 1855 ; died June 19th, 1918. Geol. Mag., August, pp. 382-3. 
• Microscopic Section of Coal Seam. The Naturalist, March, 
p. 85. 
Peat Problems. The Naturalist, March, p. 85. 
Martin Simpson. The Naturalist, August, ]). 242. 
Sands for Glass Manufacture [Review of Memoir by P. G. H. 
Boswell and others : see under Boswell, 1917]. Nature, January 
10th. 
Geological Research on Refractories during 1916 [based on 
" Summary of Progress of Geol. Survey^or 1916 "]. The Quarry, 
January, pp. 10-14. 
[Note on] Prof. W. Boyd Dawkins. The Naturalist, May, 
pp. 145-6. 
Dr. A. Harker's Address [Recrystalization in a Solid Environ- 
ment : Conditions governing Metamorphism]. The Naturalist, 
May, pp. 146-7. 
The Glacial Period ; The Glacial Question ; Deep Gorges ; 
Interglacial Conditions ; One Ice Age ; Balby Boulder Clay. 
[Notice of P. F. Kendall's contribution to the Handhuch cJer 
regionalen Geologie]. The NaViralist, June, pp. 181-4. 
Yorkshire Coal Seams : And their Correlation. [Notice of 
P. F. Kendall's Paper.] The Naturalist, April, p. 115. 
