Part 47

Brögger, Mineralien der Syenit-pegmatit-gànge, etc., Zs. Kryst., =16=, 1890.

Footnote 128:

——, Basic Eruptive Rocks of Gran, Quart. Jour. Geol. Soc., =50=, 15, 1894; Grorudit-Tinguait-Serie, Vidensk. Skrift. 1 Math. nat. Kl., No. 4, 1894.

Footnote 129:

Weed and Pirsson, e. g. Shonkin Sag, the Journal, =12=, 1–17, 1901.

Footnote 130:

The references for the articles mentioned (all in the Journal) are as follows:

Becker, =46=, 1893; =4=, 257, 1897; =3=, 21–40, 1897. Cross, =39=, 657–661, 1915. Adams, =22=, 95–123, 1906; =29=, 465–487, 1910. Daly, =22=, 195–216, 1906; =26=, 17–50, 1908. Wright, =22=, 224–230, 1906. Fenner, =29=, 217–234, 1910. Bowen, =39=, 175–191; =40=, 161–185, 1915. Pirsson, =50=, 116–121, 1895; =7=, 271–280, 1899. Smyth, =36=, 33–46, 1913. Murgoci, =20=, 133–145, 1905. Barrell, =13=, 279–296, 1902. Lindgren, =3=, 301–314, 1897; =9=, 269–282, 1900. Ransome, =5=, 355–375, 1898. Cross, =4=, 115–141, 1897. Hague, =1=, 445–457, 1896. Pogue, =28=, 218–238, 1909. Warren, =25=, 12–36, 1908. Goldman, =39=, 261–288, 1915. Washington and Pirsson, Belknap Mts., =20=, 344–353, 1905; =22=, 439–457, 493–515, 1906. ——, Red Hill, =23=, 257–276, 433–447, 1907. ——, Tripyramid Mt., =31=, 405–431, 1911.

Footnote 131:

Quantitative Classification of Igneous Rocks, Cross, Iddings, Pirsson and Washington, Chicago, 1903.

Petrogenesis, C. Doelter, Braunschweig, 1906.

Igneous Rocks, vols. =1= and =2=, J. P. Iddings, New York, 1909 and 1913.

Problem of Volcanism, Iddings, New Haven, 1914.

Natural History of Igneous Rocks, Alfred Harker, London, 1909.

Igneous Rocks and their Origin, R. A. Daly, New York, 1914.

Footnote 132:

Among these may be mentioned:

Rosenbusch u. Wülfing, Physiog. der petrog. wicht. Min., Stuttgart, 1905. Iddings, J. P., Rock-Minerals, 1st ed., New York, 1906. Johannsen, A., Manual of Petrographic Methods, New York, 1914. Winchell, N. H. and A. N., Elements of Optical Mineralogy, New York, 1909.

Footnote 133:

We may mention here, for example, the work in mineralogy of Penfield, noticed in the accompanying chapter on mineralogy. In addition to the accurate determination of the composition and constants of many minerals, some of which have importance from the petrographic standpoint, we owe to him more than anyone the recognition of fluorine and hydroxyl in a variety of species, and thereby the perception of their pneumatolytic origin. His papers have been published almost entirely in the Journal.

Footnote 134:

Wright, Methods of Petrographic-Microscopic Research, Carnegie Inst., Washington, 1911, and various papers; many in the Journal.

Footnote 135:

Conf. Wright’s work quoted above and the various manuals previously mentioned.

Footnote 136:

Kemp, Hand-book of Rocks, 3d ed., New York, 1904. Pirsson, Rocks and Rock-Minerals, New York, 1910.

Footnote 137:

Williams, G. H., U. S. Geol. Surv., Bull. =62=, Washington, 1890.