Author's Catalogue. 127 
NOLAN, A. W. (and J. D. DIXON). 
Geology of St. Helen's Island. (Can. Rec. Sci.. vol. 9, No. 1, 
pp. 53-67, Jan., 1903.) 
OSANN, A. 
On certain Archaean Rocks of the Ottawa Valley. (Geol. Sur. 
Can., vol. 12, Rep. O., pp. 82, 1899.) 
PALMER, C. M. 
Chrysocolla. A Remarkable Case of Hydration. (Am. Jour. 
Sci., vol. 16, No. 91, pp. 45-49, July, 1903.) 
RUDDY, C. A. (and HENRY LANDES). 
Coal Deposits of Washington. (Geol. Sur. Washington, Ann. Rep., 
1902, pp. 167-275.) 
SEELY, HENRY M. 
Sketch of the Life and Work of Charles B. Adams. (Am. Geol., 
vol. 32, No. 1, July, 1903.) 
SELLARDS, E. H. 
Codonotheca, a New Type ef Spore-bearing Organ from the Coal 
Measures. (Am. Jour. Sci., vol. 16, No. 91, pp. S7-96, July, 1903.) 
SHATTUCK, G. B. 
The Mollusca of the Buda Limestone. (IT. S. G. S., Bull. No. 206, 
Series C, pp. 36, 1903.) 
SHEDD, S. 
The Building and Ornamental Stones of Washington. (Geol. 
Sur. Washington, Ann. Rep., 1902, pp. 163.) 
SHIMEK, B. 
Living Plants as Geological Factors. (Iowa Ac. Sci., vol. 10, 
pp. 48, June, 1903.) 
SKEATS, E. W. 
The chemical composition of Limestones from Upraised Coral 
Islands, with notes on their Microscopical Structures. (Mus. Com. 
Zoology, vol. 42, pp. 126, June, 1903.) 
SMITH, E. A. (and DR. T. H. ALDRICH). 
The Grand Gulf Formation. (Science, Vol. IS, No. 444. pp. 20- 
26, July 3, 1903.) 
SMITH, JAS. P. 
The Carboniferous Ammonoids of America. (U. S. G. S. Mon. 
42, pp. 150, pis. 29, 1903.) 
STANTON, T. W. (and ALPHEUS HYATT). 
Pseudoceratites of the Cretaceous. (U. S. G. S., Mon. 44. pp. 347, 
1903.) 
STEIGER, GEO. (and F. W. CLARKE). 
The Action of Ammonium Chloride upon Silicates. (1 T . S. G. S., 
Bull. No. 207, Series E., pp. 57. L903.) 
VAUGHAN, T. W. 
Corals <>f the Buda Limestone. (U. S. G. S.. Appendix in Hull. 
No. 206, Series C, pp. 37-93, 1903.) 
