BIBLIOGRAPHY OF SLATE. 
The following bibliography is divided into three sections. The first includes only 
works of a genera] character, the second special scientific papers and memoirs, and 
the last works of an economic character. 
WORKS OF \ GENERAL CHARACTER. 
Cam i'hell (Donald) . Slate. 
Encycl. Britannica, 9th ed., vol. 22; 1887. 
Chamberlin i T. C), and Salisbury (R. D.). Geology. 
Vol. 1. Geologic processes and their results, slaty cleavage and slate, pp. 420-422, fig. 364; New j 
York, 1904. 
Geikie (Archibald). Cleavage. 
In article "Geology, VI," Encycl. Britannica, 9th ed., vol. 10; 1887. 
Geikie i Ar< hibald). Text-book of Geology. 
Vol. 1. Cleavage, pp. 417-419, C84-687, 4th ed.; London, 1903. 
Green (H. II.). Geology. Part I, Physical Geology; London, 1882. 
Sec. 7. Sonic structures impressed on rocks after their formation; pp. 269-279, figs. 10U-103. 
Harker (Alfred). Petrology for students; an introduction to the study of rocks , 
under the microscope; Cambridge, England, 1895. 
Chap. 17. Argillaceous rocks. 2d ed., 1897. 
Kai.kousky (Ernst). Elemente der Lithologie fur Studirende bearbeitet; Heidel- t 
berg, 1886. 
Familie der Thonschiefer, pp. 255-265. 
Rosenbusch (H.). Elemente der Gesteinslehre; Stuttgart, 1898. 
Thonschiefer, pp. 422-429. PhylliteoderThonglimmerschiefer, pp. 429-438. Analyses, pp. 425, 433. 
Roth (Justus). Allgemeine und chemische Geologie; Berlin, 1879-1890. 
Analyses, vol. 2, pp. 585, 593. 
Zirkel (Ferdinand). Lehrbuch der Petrographie, 2d ed.; Leipzig, L894. 
Vol. 3, Phyllit, pp. 295-319; Thonschiefer, pp. 744-753. 
SPECIAL SCIENTIFIC PAPERS AND MEMOIRS. 
Adie (Alexander J. ). On the expansion of different kinds of stone from an 
increase of temperature, with a description of the pyrometer used in making 
the experiments. 
Trans. Roy. Soc. Edinb., vol. 13, 1836. [Slate from Penrhyn quarry, Wales, expands .00000576 
of an inch linear for 1° Fahr.] 
Anger (F. A.). Mikroskopische Studien iiber klastische Gesteine. 
Min. Mittheil. ges., v. G. Tschermak; vol. 3, 1875, pp. 153-174. 
Bayley (W. S.). Slate from Monson, Piscataquis County, Maine. 
Bull. U. S. Geol. Survey No. 150. The educational series of rock specimens collected and distrib- 
uted by the U. S. Geological Survey, 1898, pp. 308-313. 
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