518 Scientific Intelligence. 



1920. Orthorhombic. a :& :c=:0.988 :1 :1 :1.4:62. Columnar habit. 

 Prism zone vertically striated. Color, gray-black, Streak black. 

 H. = 5. G. = 6.026. Comp.— llAg2S.28PbS.2Sb2S3.3GeS2. Found 

 on specimens collected at Freiberg in 1829 and 1833. Named 

 because of its highly basic character. 



Vonsenite. A. S. Eakle, Amer. Min., 5, 141, 1920. In pris- 

 matic crystals without terminations. Either orthorhombic or 

 monoclinic. a ih = 0.7558 : 1. Color black. Streak brownish 

 black. Brittle. H. = 5. G. = 4.2. Comp. — Similar to ludwig- 

 ite with a greater amount of ferrous iron; 3(Fe,Mg)O.B203-|- 

 FeO.FesOg. Fusible at 3 to a black magnetic globule. Soluble 

 in acids. From RiA^erside, Cal. Named from its discoverer, M. 

 Vonsen. 



Xanthoxenite. H. Laubmann and H. Steinmetz. Zs. Kr., 

 55, 579, 1920. Monoclinic. In thin plates. Yellow color. 

 Strongly pleochroic. 2B =z 115°, approx. G. — 2.844. Comp. 

 — Essentially a hydrous ferric phosphate with FeO, MnO, CaO, 

 MgO, AI2O3. Found with dufrenite, cacoxenite and other phos- 

 phates at quartz quarry, Hiihnerkobel, Rabenstein, Bavaria. 

 Named from Greek for yellow and because of relation to 

 cacoxenite. 



II. Miscellaneous Scientific Intelligence. 



1. National Academy of Sciences. — At the recent meeting of 

 the National Academy (see p. 466) R. A. Millikan was elected 

 foreign secretary to succeed George E. Hale, resigned; also 

 George E. Hale and Raymond Pearl were made members of the 

 Council. 



The new members elected are as follows : F. M. Chapman, of 

 the American Museum of Natural History ; W. LeRoy Emmet, of 

 the General Electric Company, Schenectady ; W. D. Harkins, of 

 the University of Chicago ; Ales Hrdlicka, of the U. S. National 

 Museum, Washington; A. E. Kennelly, of Harvard University; 

 W. G. MacCallum, of the Johns Hopkins Medical School; D. C. 

 Miller, of the Case School of Applied Sciences, Cleveland ; G. A. 

 Miller, of the University of Illinois ; B. L. Robinson, of Harvard 

 Universitv ; V. M. Slipher, of the Lowell Observatory, Flagstaff, 

 Arizona ; L. B. Stillwell, New York City ; D. D. Van Slyke, of the 

 Rockefeller Institute, New York City ; T. W. Vaughan, of the U. 

 S. National Museum, Washington ; H. S. Washington, of the Geo- 

 physical Laboratoiy, Washington; R. S. Woodworth, of Colum- 

 bia University. 



William Bateson, director of the John Innes Horticultural 

 Institution, Merton Park, Surrey, England ; and C. Eijkman, of 

 the University of Utrecht, were elected foreign associates. 



2. The Principles of Immunology ; by Howard T. Karsner 

 and Enrique E. Ecker. Philadelphia. Pp. xvii, 309. (J. B. 



