Geology and Mineralogy, 521 



ward ; and a preliminary account of the fossils occurring in Mis- 

 souri, with a table giving their localities and geological periods, 

 by G. Hambach. — Mr. Winslow states that the investigation of 



the Zinc and Lead Regions is under the charge of Mr. Walter P. 

 Jenney, ol the U. S. Geological Survey. Missouri is a rich State 

 in economical mineral materials and in the scientific interest of 

 its geology, and much is to be expected from this new survey. 



3. A preliminary Chech list of the Cretaceous Invertebrate 

 fossils of Texas, accompanied by a short description of the lith- 

 ology and stratigraphy of the system, by R. T. Hill. Bulletin 

 Xo. -t of the Geological Survey of Texas, E. T. Dumble, State 

 Geologist. — A valuable Catalogue of Texas Cretaceous fossils, in 

 which the species of the -Lower Cretaceous thus far described are 

 referred to their right places in the series. It was prepared for 

 the use of the Survey and not as the final result of its work. 



4. Geological Map of Scandifiavia. — A small geological 

 map, handsomely colored, prepared by the excellent geologist of 

 Christiania, Dr. Hans Reusch, has recently been published by 

 H. Aschehoug & Co. of Christiania. Upon it are geological 

 maps also of Iceland, Spitzbergen, and the Faaro Islands. It is 

 accompanied by an explanatory pamphlet of 32 pages. 



5. Gems and Precious Stones of North America. — A popu- 

 lar description of their occurrence, value, history, archaeology, 

 and of the collections in which they exist ; also a chapter on 

 pearls and on remarkable foreign gems in the United States. 336 

 pp. large 8vo, with 8 colored plates ; by George Frederick 

 Kttnz. New York, 1890 (The Scientific Publishing Company). 

 — The American reader, who is attracted to the subject of gems, 

 will find much to interest and instruct him in the handsome vol- 

 ume by Mr. Kunz. Starting off in each chapter with a brief 

 mineralogical description of the species under discussion, the 

 author goes on to give a detailed account of its occurrence in this 

 country, the value of the stones found, the present owners of the 

 finest ones and other allied points, embracing much information 

 which has not been brought together before, and which the 

 author's position has given him peculiar facilities for collecting. 

 The fact that the book has been written in popular form for the 

 general public should give it a wide range of readers. At the 

 same time this removes it from the kind of criticism to which a 

 work striving for minute scientific accuracy would be liable. The 

 publishers have shown much enterprise in the handsome form in 

 which the book has been put as regards paper and press work, 

 and the numerous colored plates which ornament it are of very 

 unusual excellence ; it is rare indeed that the delicate coloring of 

 the various gem stones, and of the natural mineral specimens, 

 has been reproduced so faithfully. 



III. Miscellaneous Scientific Intelligence. 



1. Fall of Meteorites in Iowa; by Joseph Torrey, Jr., and 

 Erwix H. Barbour. (Communicated.) — The large and brilliant 

 meteor which fell in northern Iowa on the afternoon of May 2d, 



