330 Scientific Intell igen ce. 



Orange County ; and by H. W. Shinier on Petrographic Descrip- 

 tions of the Dikes of Grand Isle. The paper on Grand Isle 

 geology is a valuable contribution to the structural analysis of 

 the Ordovician rocks of the region covered. The revival of the 

 name Chainplanian, for Lower Silurian or Ordovician, is unfor- 

 tunate, especially in a paper in which Champlain clay is used 

 seven times in another sense. h. s. av. 



3. A Report on the Geology of Louisiana, Pt. VI ; by Gil- 

 bert D. Harris, Geologist-in-charge, for the field seasons 1900- 

 1901-1902. 288 pp., 10 plates, 1 figs. State Experiment Station, 

 Baton-Rouge, La., Wm. C. Stubbs, Director. — The Report con- 

 sists of a series of papers on various geological problems of the 

 State : I. The Geology of the Mississippi Embayment, G. D. 

 Harris. II. The Salines of North Louisiana. The geological 

 age of the salt-bearing beds is Cretaceous for the salt-bearing 

 rock of North Louisiana and Texas. III. The Geography and 

 Geology of the Sabine River. The author has worked out a 

 complete geological section for the region cut by the river. IV. 

 Notes on the Geology along the Ouachita. Papers II, III, IV are 

 by A. C. Veitch. V. Improvements in Louisiana Cartography ; 

 VI, Subterranean Waters of Louisiana ; VII, Tides in the Rigolets, 

 and VIII, Oil in Louisiana, by R. T. Harris. The horizon of 

 this oil is not certainly fixed, though some of the wells issue from 

 beds as late as Miocene. h.. s. w. 



4. Tables of Minerals ; by S. L. Penfield. 77 pp. Sold by 

 the Yale Cooperative Association, New Haven. — This pamphlet 

 was issued to serve as a guide and reference book to accompany 

 lectures on crystallography and descriptive mineralogy. The 

 minerals are arranged in the tables as follows : I. According 

 to the six systems of crystallization and their prominent sub- 

 divisions, the minerals of each subdivision being arranged in 

 accordance with the chemical classification adopted by Dana. 

 II. According to the elements, emphasis being given to minerals 

 which are important from an economic standpoint. Short descrip- 

 tions are added to the lists stating the uses of the minerals and 

 brief summaries are given of the amount and value of their pro- 

 duction. III. With reference to geological occurrence and asso- 

 ciation, as rock-making minerals, vein minerals, etc. 



The minerals are given three ranks according to their relative 

 importance, which is indicated in the tables by the type used in 

 printing the names of the species. Accompanying the names of 

 the minerals their chemical formulas are given and also numbers 

 corresponding to the pages in Dana's Text-Book of Mineralogy 

 and System of Mineralogy, on which descriptions of the species 

 may be found. w. e. f. 



5. Ueber Urausscheidungen in rheinischen Basalten ; von F. 

 Zirkel. (Bd. xxviii, Abh. mat. phys. Klasse d. K. Sach. Ges. d. 

 Wiss., No. Ill, 1903, pp. 103-198.)— The basalts of the Rhine 

 district have long been known for the many interesting inclusions 

 which they contain, single minerals, such as olivine in masses, 



