68 
593 Penfield (Samuel L.). On the chemical composition of childrenite. 
Yale Bicentennial publications. Cont. to Mineral, and Petrog., pp. 
124-125, 1901. (From Am. Jour. ScL, vol. 18, pp. 315-316, 1880.) 
594 On the chemical composition of aniblygonite. 
Yale Bicentennial publications. Cont. to Mineral, and Petrog., pp. 
121-123, 1901. (From Am. Jour. ScL, vol. 18, pp. 295-301, 1879. ^ 
595 On spangolite, a new copper mineral. 
Yale Bicentennial publications. Cont. to Mineral, and Petrog., pp. 
168-175, 1901. (From Am. Jour. ScL, vol. 39, pp. 370-378, 1890.), 
596 On pearcite, a sulpharsenite of silver. 
Yale Bicentennial publications. Cont. to Mineral, and Petrog., pp. 
252-260, 1901. (From Am. Jour. ScL, vol. 2, pp. 17-20, 1896.) 
597 - - On the chemical composition of hamlinite and its occurrence 
with bertrandite at Oxford County, Maine. 
Yale Bicentennial publications. Cont. to Mineral, and Petrog., pp. 
287-290, 1901. (From Am. Jour. ScL, vol. 4, pp. 313-316, 1897.) 
598 - - and Foote (H. W.). On bixbyite, a new T mineral. 
Yale Bicentennial publications. Cont. to Mineral, and Petrog., pp. 
283-286, 1901. (From Am. Jour. ScL, vol. 4, pp. 105-107, 1897.) 
599 - - On clinohedrite, a new mineral from Franklin, N. J. 
Yale Bicentennial publications. Cont. to Mineral, and Petrog., pp. 
291-296, 1901. (From Am. Jour. ScL, vol. 5, pp. 289-293, 1898.) 
600 - - and Ford (W. E.). On calaverite. , 
Am. Jour. ScL, 4th ser., vol. L2, pp. 225-245, figs. 1-30, 1901. 
Describes occurrence and crystallographic characters of the material. 
601 - and Pirsson (L. V.). Contributions to mineralogy and pet- 
rography, from the laboratories of the Sheffield Scientific 
School of Yale University. 
Yale Bicentennial publications. August, 1901, 482 pp., Charles 
Scribner's Sons, New York. 
Abstracts: Am. Geol., vol. 28, pp. 322-323, 1901. Am. Jour. ScL, 4th 
ser., vol. 12, pp. 398 (£ p.), 1901. 
602 - - and Pratt (J. H.). On the occurrence of thaumasite at West 
Paterson, New Jersey. 
Yale Bicentennial publications. Cont. to Mineral, and Petrog., pp. 
246-251, 1901. (From Am. Jour. ScL, vol. 1, pp. 229-233, 1896.) 
603 - - and Warren (C. H.). Some new minerals from the zinc 
mines at Franklin, M. J., and note concerning the chemical 
composition of ganomalite. 
Yale Bicentennial publications. Cont. to Mineral, and Petrog., pp. 
325-342, 1901. (From Am. Jour. ScL, vol. 8, pp. 339-353, 1899.) 
