Author's Catalogue. 193 
Hillebrand, W. F. 
Some principles and methods of rock analysis. Bull. 176, U. S. 
Geol. Sur., pp. 114, 1900. 
Hilgard, E. W. 
A Sketch of the Pedological Geology of California. (Jour. 
Geol., vol. 9, p. 74, Jan. -Feb., 1901 ; Am. Geol., vol. 27, Feb., 1901, p. 
131-) 
Hitchcock, C. H. 
The story of Niagara. (Am. Antiquarian, pp. 24, Jan., 1901.) 
Hoffman, G. C. 
New mineral occurrences in Canada. (Am. Jour. Sci., vol. 11. p. 
149, Feb., 1901 . ) 
Jones, S. P. 
The geology of the Tallulah gorge. (Am. Geol., vol. 2y, p. 67, 3 
pis., Feb., 1901.) 
Knight, W.C. 
Bates' Hole. (Jour. Geol., vol. 9, p. 70, Jan. -Feb., 1901.) 
Knowlton, F. H. 
Flora of the Montana formation. Bull. 163, U. S. Geol. Sur., pp. 
118, 19 pis., 1900. 
Lawson, A. C. 
A Feldspar-Corundum rock from Plumas county, California. (Jour. 
Geol., vol. 9, p. 78, Jan. -Feb., 1901 ; Am. Geol., vol. 27, p. 132. Feb., 
1901.) 
Lawson, A. C. ' 
The Drainage Features of California. (Jour. Geol., vol. 9, Jan.- 
Feb., 1901, p. 77; Am. Geol., vol. 27, Feb., 1901, pp. 132.) 
Lord, E. C. E. 
Report on the Igneous rocks from the vicinity of San Carlos and 
Chirpa, Texas. Bull. 164, U. S. Geol. Sur., pp. 88-95, 1900. 
Lowell, Percival 
Mars on Glacial Epochs. (Pro. Am. Phil. Soc, vol. 39, pp. 641-665, 
Oct.-Dec, 1900.) 
Lyman, Benj. S. 
Movements of Ground Water. (Jour. Frank. Inst., Oct., 1900 
15 pp.) 
Lyman, Benj. S. 
The importance of topography in geological surveys. (Min. & 
Met. Jour., Dec. i, 1900, vol. 23, p. 67.) 
Matthew, Geo. F. 
Acrothyra; a new s'enus of Etcheminian brachiopods. (Bull. Nat. 
Hist. Soc. N. Bruns, No. 19, 1901, p. 303.) 
Matthews, E. B. 
An account of the character and distribution of Maryland build- 
ing stones, together with a history of the quarrying industry. (Mary- 
land Geol. Sur., vol. 2, pp. 125-241, pis. 7-32, 1898.) 
Matthews, E. B. 
Maps and mapmakers of Maryland. (Md. Geol. Sur., vol 2 pp 
337-488,1898.) 
