Miscellaneous Intelligence. 465 



crystals which lie together in the larger vein gave measurements 

 (P^P') varying from 48° 32' to 49° 28'; this form thus corre- 

 sponds to the hexagonal pyramid (4045) described by Grosser.* 

 A single small crystal obtained from a small adjacent vein gave a 

 measurement 55° 10' for (ps\p') and would, therefore, correspond 

 to the pyramid (5054) described by Moses.f 



The prism zone is represented by a single face only, the lower 

 end of the crystals being as a rule rounded as shown in the illus- 

 tration, or terminated by cleavage planes. 



Since zincite is dihexagonal polar in type, or hemimorphic, the 

 base is represented by an upper (0001) and a lower (0001), each 

 of which may occur independently. Both have been described 

 as occurring on artificial zinc oxide crystals.^ Dana§ figures the 

 lower base on a zincite crystal from this same locality ; while the 

 lower base is not represented on any of the above crystals, one 

 crystal, however, illustrated in fig. 2 shows the upper base (0001) 

 very beautifully. This is, therefore, a n§w form not heretofore 

 observed on zincite. All the other crystals are terminated 

 sharply or are rough and rounded as if they were corroded. 



Guyot Hall, Princeton, N. J., Feb. 15, 1911. 



III. Miscellaneous Scientific Intelligence. 



1. National Academy of Sciences. — The annual meeting of the 

 National Academy was held in the new building of the National 

 Museum at Washington on April 18 to 20. President Ira Rem- 

 sen was in the chair and some forty-five members were present. 



The following new members were elected : Edwin E. Barnard, 

 of the Yerkes Observatory ; Edward B. Van Vleck, of the Uni- 

 versity of Wisconsin ; John E. Hayford, of Northwestern Uni- 

 versity ; Edwin H. Hall, of Harvard University ; James F. Kemp, 

 of Columbia University ; Arthur L. Day, of the Geophysical 

 Laboratory of the Carnegie Institution; Julius O. Stieglitz, of 

 the University of Chicago ; Bertram B. Boltwood, of Yale Uni- 

 versity ; Robert A. Harper, of the University of Wisconsin. The 

 following foreign associates were also elected : Prof. Ernest 

 Rutherford, of the University of Manchester, England, and Prof. 

 Vito Volterra, of the University of Rome, Italy. 



A lecture was delivered on Tuesday evening, under the aus- 

 pices of the Washington Academy of Sciences and in honor of 

 the National Academy, bj>- Dr. John Murray, on " The Ocean." 

 At the dinner of the Academy, given at the Cosmos Club on 

 Wednesday evening, the Henry Draper medal was presented to 

 Mr. Charles G. Abbot, director of the Smithsonian Astrophysical 

 Observatory, for his researches on the infra-red region of the 

 solar spectrum and his accurate measurements, hy improved 

 devices, of the solar constant of radiation. 



* Zeitschr. Kryst., xx, 354, 1892. f School Mines, Q., xvi, 226, 1895. 



JNeues Jahrb. Min., 1884, ii, 164. § This Journal (3), xxxii, 389. 



