Thus far no mention has been made of German geologists, with the exception of Suess, an Austrian. German geology is voluminous and the names of many well-known geologists could be cited. But this article has sought to trace the origin and growth of fundamental ideas. The Germans have been assiduous observers of detail; preeminent as systematizers and classifiers, seldom originators. Even petrology, which might be regarded as their especial field, was transplanted from Great Britain. In the science of mountains they have followed in their fundamental ideas especially the French. Turning to the mediums of publication through which this progress of knowledge in earth structures has been recorded, the American Journal of Science stands foremost as the only continuous record for the whole century in American literature, fulfilling for this country what the Quarterly Journal of the Geological Society has done for Great Britain since 1845, and the Bulletin de la Société Géologique for France since 1830. _Notes._ Footnote 78: H. D. Rogers, Geology of New Jersey, Final Report, p. 115, 1840. Footnote 79: H. D. Rogers, Geology of Pennsylvania, vol. 2, pt. II, pp. 761, 762, 1858. Footnote 80: Connecticut Academy of Arts and Sciences, 1810; quoted by G. P. Merrill in Contributions to the History of North American geology, Ann. Rpt. Smithsonian Institution for 1904, p. 216. Footnote 81: A Sketch of the geology, mineralogy, and scenery of the regions contiguous to the river Connecticut; with a geological map and drawings of organic remains; and occasional botanical notices, the Journal, 6, 1–86, 201–236, 1823; 7, 1–30, 1824. Footnote 82: Clarence King, U. S. Geol. Exploration of the Fortieth Parallel, vol. 1, pp. 16, 44–48, 1878. Footnote 83: Illustrations of the Huttonian Theory of the Earth, pp. 219–238, 1802. Footnote 84: Robert Jameson, Elements of Geognosy, pp. 55–57, 1808. Footnote 85: G. P. Merrill, Contributions to the History of American Geology. Report of the U. S. National Museum for 1904, p. 328. Footnote 86: H. D. Rogers, Geology of Pennsylvania, vol. 2, p. 916, 1858. Footnote 87: James Hall, Natural History of New York, Paleontology, vol. 3, pp. 51–73, 1859. Footnote 88: The Journal, 5, 423–443, 474, 475; 6, 6–14, 104–115, 161–172, 304, 381, 382, 1873. Footnote 89: C. R. Van Hise, Principles of North American Pre-Cambrian Geology, U. S. Geol. Surv., 16th Ann. Report, pt. I, pp. 607–612, 1896. Footnote 90: W. N. Rice, On the use of the words synclinorium and anticlinorium, Science, 23, 286, 287, 1906. Footnote 91: C. E. Dutton, Critical observations on theories of the earth’s physical evolution, The Penn Monthly, May and June, 1876. Footnote 92: B. Willis, Research in China, vol. 2, 1907. Footnote 93: Joseph Barrell, Science, 39, 259, 260, 1909; Jour. Geol., 22, 672–683, 1914. Footnote 94: