Geology and Mineralogy . 185 



SCIENTIFIC INTELLIGENCE. 



Geology and Mineralogy. 



1. U. S. Geological Survey ; Chas. D. Walcott, Director. — 

 The following publications of the Survey have been recently 

 issued : 



Monograph XLII, The Carboniferous Ammonoids of America, 

 by James Perrin Smith, pp 1-211, plates i-xxix, 1903. 



Monograph XLIII. The Mesabi Iron-Bearing district of Min- 

 nesota, by Charles Kenneth Leith ; Charles Richard Van 

 HiSE, Geologist in charge, pp. 1-316, plates i-xxxiii, figs. 1-12, 

 1903. 



Monograph XLIV. Pseudoceratites of the Cretaceous, by 

 Alpheus Joseph Hyatt, edited by T. W. Stanton, pp. 1-351, 

 plates i-xlvii, 1903. 



Bulletin No, 205. The Mollusca of the Buda limestone, by 

 George Burbank Shattuck, with an appendix on the Corals of 

 the Buda limestone by Thomas Wayland Vaughan, pp. 1-94, 

 plates i-xxvii, fig. 1, 1903. 



Bulletin No. 206. A study of the Hamilton Formation of the 

 Cayuga Lake Section in Central New York, by Herdman Fitz- 

 gerald Cleland, pp. 1-112, plates i-v, figs. 1-3, 1903. 



Bulletin No. 207. The action of Ammonium Chloride upon 

 silicates by Frank Wigglesworth Clarke and George Steiger, 

 pp. 1-57, 1902. 



Bulletin No. 209. The Geology of Ascutney Mountain, Ver- 

 mont, by Reginald Ald worth Daly, pp. 122, fig. 1, pis. i-vii, 

 1903. 



Bulletin No. 210. The correlation of Geological Faunas, a con- 

 tribution to Devonian Paleontology by Henry Shaler Williams, 

 pp. 1-147, pi. i, 1903. 



2. On JBatrachian and other footprints from the Coal Meas- 

 ures of Joggins, JST. S. ; by G, F. Matthew. Bull. Nat. Hist. 

 Soc. of New Brunswick, vol. v, No. 21 (1903).— Dr. Matthew 

 has described certain footprints in the collections of the Natural 

 History Society of New Brunswick. They pertain to three 

 different types of Batrachian footprints which have received 

 generic names from King and Marsh. The first is of a type com- 

 mon in the Coal Measure sandstones and the other two have 

 been referred to the genera Baropus and Dromopus, respectively. 

 The following are the names of these species : Thenar opus {?) 

 McNaughton^ JBaropus hnguifer, Dromopus agilis, Myriapo- 

 dites, sp. 



3. Ueher Artinit, ein Neues Mineral der Ashestgriiben von 

 Val Lanterna ; Luigi Brugnatelli. — Under the name artinite is 

 described a new hydrous magnesium carbonate. It is white in 

 color and occurs in spherical aggregates made up of radiating 

 fibers. Its formula was determined to be MgC03.Mg(OH)2.3H20. 



