Geology and Mineralogy. 65 
Copper-bearing region in Northern Texas and the Indian 
10. 
Territory.—The geoosy of this region is briefly described by J. 
H. Burman; in the Trans. N. Y. Ac ad, Sci. for 1881-1882 (p. 18) 
strata are abou 
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tory. Protcaat Newberry a added, in the discussion which fol- 
lowed the reading o r, Furman’s paper, remarks on the 
similarity of the ores and their mode of occur rence to the same 
in the upper portion of the Triassic in New Mexico, and southern 
Utah, and observes that in the localities hitherto explored, the ore 
is too much scattered to be profitably mine he wood, impreg- 
nated with the ore and also that which occurred silicified, he said 
was pala hag Coniferous of the Araucarian family, as he had 
found from a microscopic examination. 
e Amygdaloid ve Brighton, ravoarggltl pal has beenexam- 
ined microscopically by Dr. E. R. Benton, and pronounced to be a 
true eruptive rock. aper on the ge AAS accompanied by a 
map, is contained in the Proceedings of the Boston Society of 
Natural History, vol. xx, 416, 1880. 
12. Primordial Trilobites in Sardinia,—Prof. Meneghini has 
announced the discovery of W species of trilobites in slaty an 
ch ag beds at Gutturu eae in Nebida, Sardinia, which he 
ames Paradoxides Gennari (near P. Bohe micus in Ms Bi 
ae | 
fossils of we Hu dso n River gro and notice of Meutboriele 
i gs by 8 . Miller (with a plate) ; ‘acdsee of 
new fossils of the Lower er and Subcarboniferous rocks of 
Ohio and cake, by A. G. laut (with a SateL, ; on new 
Airey of Entomostraca by Crs. 
Fossils of the Cincinnati Booka eer “ Paleontologist” 
of Cincinnat edited by U. P. James, contains a notice of Scoli- 
thus linea ae m the Cincinnati group, in the eastern part of 
Cincinnati; at sland species of pte pete supposed to be new ; 
of Dekaya maculata James; of eight species of Ptilodictya; and 
of an Orthis and two species of SiFiptonk ola. 
15. Voleanoes: what they are and what they — art Joun 
W. Jupp, F.R.S. (Kegan Paul and Co,: London, 1881.)—This 
work forms volume xxxv of the teen engi Scientific ae ae In 
his earlier studies the author enjoyed the counsel and assistance of 
'. Poulet Scrope, who up to his death was an eminent authority 
on volcanoes, and the present book may in some sense be regarded 
48 Contin nuing the work of that pioneer in Vuleanology. 
Am, Jour. Sct, ee ane Series, Vou, XXIII, No. 133.—Januanry, 1882, 
