liv GENERAL SUMMARY OF SCIENTIFIC AND 



of Sciences, has described AragoUte, a new hydrocarbon sim- 

 ilar to Idriollte, occurring in bright-yellow masses, impreg- 

 nating crystalline silicious dolomite, and associated with cin- 

 iiabarite. 



Dr. Endlich lias named a species Pealiie, from the collec- 

 tions made in Dr. Hayden's expedition, this appearing to be 

 a variety of opal, from the Geyser region of the Yellowstone. 



Petersen has published Giiadalcazarite, from Mexico, which 

 contains selenium and cadmium. 



The most elaborate mineralogical paper which has appear- 

 ed in the United States during the year is one upon Corun- 

 dum^ by Dr. F. A. Genth, and published in the Proceedings 

 of the American Philosophical Society. In this occur several 

 new species, such as Kerrite^ Maconite^ Wlllcoxite, and Dud- 

 leyite. Professor Silliman, in the Ainericcui Journcd of Sci- 

 ence^ also describes a new species, nnder the name of Priceite, 

 from Lone Ranch, Curry County, Oregon, and which had 

 been already referred to by Mr. A. AY. Chase as an Oregon 

 borate of lime or morphite. 



GEOGRAPHY. 



In the dej^artment of G eography ^ and its various subdivis- 

 ions, the record of 1873 is quite full; although no very im- 

 portant advances in our knowledge have been brought about, 

 with the exception of that furnished by the voyage of the 

 Polaris^ to which reference will be made hereaftei*. 



Geodesy^ Hydrography^ and Namgation. The average 

 amount of work connected with geodetic operations in dif- 

 ferent parts of the world has been accomplished, the various 

 state and national surveys, both in Europe and America, 

 having been carried forward at the usual rate. 



The labors of the United States Coast Survey along the 

 coast, and in the interior by the Engineer Bureau along the 

 Lakes, and in the Rocky Mountains by Lieutenant Wheeler, 

 Professor Hayden, and Major Powell, to which reference will 

 be made again, have established with great precision many 

 important geographical positions, and connected them by tri- 

 angulation. 



The shore outlines of several of the Aleutian Islands have 

 been defined by Mr. Dall during the year, under the aus2)ices 

 of the L'nited States Coast Survey. 



