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185 
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- Syllabus of Lectures on Optical Crystallography. 
-Colestin von Mineral County, West Virginia. Zeitschrift 
fumKrystallographie, vol. XVIII, No. 1. 
-— On the Possibility of Hemihedrism in the Monoclinic 
Crystal System, with Especial Reference to the Hemi¬ 
hedrism of Pyroxene. Amer. Jour. Sci., vol. XXXVIII, 
pp. 115-120. 
-- Anglesite, Cerussite and Sulphur from the Mountain View 
Lead Mine, near Union Bridge, Carroll County, Md. 
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- and Gill, A. C. Contributions to the Mineralogy of 
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MINING. 
SERIALS. 
Golden [Colorado] Colorado State School of Mines. 
Annual Report to Governor, 1885-1887, 88- 
90. + 19a 
Newcastle [England] North of England Mining and 
Mechanical Engineers. 
Transactions. Vols. XII-XVII, XXIII-XXX, 
XXXI, pts 1-3, XXIV 1-6, XXXV 1-3, 
XXXVI 2-4, XXXVII 1-6, XXXVIII 1-6, 
XXXIX 1, XL 1-4. + 18a&b 
Index of Vols. I-XXV, (1852-76). 18a 
-Council of Mining and Mechanical Engineers. North¬ 
umberland and Durham Borings and Sinkings. 
Part I, A-B, II, C-E, III, F-K 18b 
Reports 1890-91. Parts I-III. 18b 
