366 Samuel Lewis Penfield. 



1894 Crystallization of Willemite. Ibid., 305-309. 

 Crystallization of Herderite. Ibid., 329-339. 



Chemical Composition and related Physical Properties of Topaz (with 



J. C. Minor). Ibid., 387-396. 

 On Argyrodite and a new Sulphostannate of Silver (Canfieldite) from 



Bolivia. Ibid., 451-454. 

 On Thallium Triiodide and its Relation to the Alkali-Metal Triiodides 



(with H. L. Wells). Ibid., 463-466. 

 On some Methods for the Determination of Water. Ibid., xlviii, 



30-37. 

 Mineralogical Notes. Ibid., 114-118. 

 Mineralogical Notes and Separation of Minerals of High Specific 



Gravity (with D. A. Kreider). Ibid., 141-144. 



1895 Note on the Crystallization of Calaverite. Ibid., 1, 128-131. 



Effect of the Mutual Replacement of Manganese and Iron on the 

 Optical Properties of Lithiophilite and Triphylite (with J. H. 

 Pratt). Ibid., 387-390. 



Devices for the Separation of Minerals of High Specific Gravity. Ibid., 

 446-448. 



1896 Fayalite from Rockport, Mass., and the Optical Properties of the 



Chrysolite Group (with E. H. Forbes). Ibid. (4), i, 129-135. 

 Occurrence of Thaumasite at West Paterson, N. J. (with J. H. Pratt). 



Ibid., 229-233. 

 On Pearceite, a Sulpharsenite of Silver, and on the Crystallization of 



Polybasite. Ibid., ii, 17-29. 



1897 On Roeblingite, a new Silicate from Franklin Furnace, N. J., contain- 



ing S0 2 and Lead (with H. W. Foote). Ibid., iii, 413-415. 

 Identity of Chalcostibite (Wolfsbergite) and Guejarite and on Chalco- 



stibite from Huanchaca, Bolivia (with A. Frenzel). Ibid., iv, 



27-35. 

 On Bixbyite, a new Mineral, and on the Associated Topaz (with H. W. 



Foote). Ibid., 105-108. 

 Note on the Composition of Ilmenite (with H. W. Foote). Ibid., 



108-110. 

 Chemical Composition of Hamlinite and its Occurrence with Ber- 



trandite at Oxford Co., Me. Ibid., 313-316. 



1898 On Clinohedrite, a new mineral from Franklin, N. J. (with H. W. 



Foote). Ibid., v, 289-293. 

 Crystallographic Note on Krennerite from Cripple Creek, ,Colo. Ibid., 



375-377. 

 Note on Sperrylite from North Carolina (with W. E. Hidden). Ibid., 



vi, 381-383. 

 Manual of Determinative Mineralogy and Blowpipe Analysis by G. J. 



Brush. Revised and enlarged, with new tables. 312 pp. 



1899 On the Chemical Composition of Tourmaline (with H. W. Foote). 



This Journal (4), vii, 97-125. 

 On the Chemical Composition of Parisite and a new occurrence at 



Ravalli Co., Mont, (with C. H. Warren). Ibid., viii, 21-24. 

 On some new Minerals from the Zinc Mines at Franklin, N. J. (Han- 



cockite, Glaucochroite, Nasonite, Leucophoenicite, and Note on 



Chemical Composition of Ganomalite (with C. H. Warren). Ibid., 



339-353. 



1900 On Graftonite, a new Mineral from Grafton, New Hampshire, and its 



Intergrowth with Triphylite. Ibid., ix, 20-32. 

 Siliceous Calcites from the Bad Lands, Washington Co., So. Dakota 



(with W. E. Ford). Ibid., 352-354. 

 Chemical Composition of Sulphohalite. Ibid., 425-428. 

 The Interpretation of Mineral Analyses ; a Criticism of recent Articles 



on the Constitution of Tourmaline. Ibid., x, 19-32. 

 On some Interesting Developments of Calcite Crystals (with W. E. 



Ford). Ibid., 237-244. 



