Correspondence. 391 
Walcott, C D. 
Nineteenth Annual Report of the United States Geological Survey. 
1897-98, Six parts. Washington, 1899. 
Ward, L. F. 
The Cretaceous formation of the Black Hills as indicated by the 
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F. H. Knowlton), 19th Ann. Rep. U. S. G. S., pis. liii-clxxii, 
pp. 521-947, 1899.) 
Weed, Walter Harvey. 
Enrichment of mineral veins by later metallic sulphides. (Bull. 
Geol. Soc. Am., vol. 11, pp. 179-206, April, 1900.) 
Weeks F. B, 
Bibliography and index of North American geology, paleontology, 
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163, Washington, 1899. 
White, David. 
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WFiite, David. 
Relative ages of the Kanawha and Allegheny series as indicated 
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Woodwortin, J. B. (N. S. Slnaler and) 
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Wright, Fred B. 
Erosion of mountains in southern California. (Am. Geol., vol. 25, 
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CORRESPONDENCE. 
Devonische Fischreste aus der Eifel. By F. v. Huene 
(Neues Jahrb. igoo, Bd. I, p. 64). A notice of this paper appeared in 
the April number of the Geologist over the initials "G. F. M.", but the 
reviewer failed to mention Dr. v. Huene's claim to have announced for 
the first time the presence of Rhynchodus remains in European rocks. 
In view of the very considerable interest attaching to Devonian fish- 
remains of Europe, it deserves to be recalled that dental plates of 
Rhynchodus from the Eifel were figured by H. von Meyer in Palason- 
tographica vol. IV., 1855, being theoretically associated by him with the 
type of his so-called "Physichthys." The true nature of the latter 
"genus" was first pointed out by A. S. Woodward (Geol. Mag. vol. VII 
1890, p. 459,) after an examination of von Meyer's originals in their pres- 
ent resting-place in the museum of Comparative Zoology at Cambridge, 
