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SCIENCE 



[N. S. Vol. XLIII. No. 1104 



Professor Douglas W. Johnson, of Colum- 

 bia University, on February 11 addressed tbe 

 United States Naval War College at New- 

 port, Ebode Island, on " Topographic Features 

 of Europe as a Factor in tbe War." 



At tbe regular montbly meeting of tbe 

 Cosmos Club, Wasbington, Dr. Cbarles War- 

 dell Stiles delivered an address on " Some 

 Medical Aspects of tbe Eace Question in tbe 

 Soutb, witb Special Eeference to tbe Hook- 

 worm." 



Dr. Julius Nelson, professor of biology at 

 Eutgers College and state biologist, died sud- 

 denly at bis home in New Brunswick, N. J., 

 on February 16, from pneumonia. He was 

 born in Copenbagen, Denmark, in 1858. He 

 was a graduate of Wisconsin University, and 

 received tbe doctorate of pbilosopby from tbe 

 Jobns Hopkins University. Dr. Nelson bad 

 been a professor at Eutgers since 1888. 



Dr. John Wyllie, appointed professor of 

 medicine in tbe University of Edinburgh in 

 1900, in succession to Sir Tbomas Grainger 

 Stewart, and retired owing to ill bealtb in 

 November, 1914, died on January 27. 



The death bas occurred at Copenbagen of 

 Dr. Friedricb Kriigen, director of the astro- 

 nomical observatory at Aarbus. 



Dr. J. C. MoBERG, professor of geology at 

 Lund, bas died at the age of sixty-one years. 



The U. S. Civil Service Commission an- 

 nounces an examination on March 21, for fish 

 pathologist, for men only, to fill a vacancy at 

 $2,500 per annimi, in the Bureau of Fisheries, 

 Department of Commerce. The duties of tbe 

 fisb pathologist are primarily to investigate tbe 

 nature and tbe effects of diseases of fish or 

 shellfish, physiological or environmental con- 

 ditions associated with the development of 

 pathological phenomena, and tbe means of 

 prevention or cure. Tbe investigation of 

 stream pollution is involved as well as tbe 

 study of the physical, chemical and biological 

 conditions that may be salutary or deleterious 

 to fish. Competitors will not be assembled for 

 examination, but will be rated on education, 

 experience and publications or thesis. Gradu- 

 ation with a bachelor's degree from a course in 



a college or university of recognized standing, 

 and in addition at least one year of post- 

 graduate work or tbe equivalent in chemistry 

 or biology, are prerequisites. 



According to information received via 

 Buenos Aires, the magnetic-survey vessel Car- 

 negie, under tbe command of Captain J. P. 

 Ault, arrived at Soutb Georgia Island on 

 January 12, having made magnetic observa- 

 tions daily since her departure from Lyttelton, 

 New Zealand, on December 6. Icebergs were 

 encountered on nine days during the trip. The 

 Carnegie sailed again on January 14, in con- 

 tinuation of her circumnavigation of tbe re- 

 gion between tbe parallels 50° and 60° soutb. 



We learn from Nature that there is now at 

 the London Library a small but very interest- 

 ing exhibit of early printed books on astron- 

 omy, from the collection of Mr. Gilbert E. 

 Eedgrave. Many of them are from the press 

 of Erhard Eatdolt, whose fine work at Augs- 

 berg and Venice is so well known. There is a 

 splendid copy of a " Kalendar " by Monteregio 

 (otherwise Eegiomontanus), in Italian, and 

 an even finer one in Latin, both printed by 

 Eatdolt at Venice in 14 Y6 — works now of great 

 rarity. There is also a very rare folio tract 

 by the same author, " Universis Bonarum 

 Artium Studi," printed at Nuremberg in 1476. 

 These appear to be in absolutely perfect condi- 

 tion. Among otbfer fifteenth-century books 

 mention may be made of a fine copy of 

 Hyginus, " Poeticon Astronomicon," of 1487, 

 as well as tbe less rare edition of 1448. Tbe 

 diagrams of eclipses, etc., are frequently 

 colored — some by hand and some printed in 

 colors. Two works of later date, but of spe- 

 cial interest, are Galileo's " Istoria e dimo- 

 strabioni," of 1613, describing the newly dis- 

 covered spots on tbe sun, and announcing the 

 configurations of Jupiter's satellites, and his 

 " Dialogo " on tbe Ptolemaic and Copernican 

 systems, which occasioned his condemnation 

 by the Inquisition. Tbe only English book is 

 a fine copy of tbe first edition of Newton's 

 "Principia" (1687). 



The determination of tbe amount of water 

 flowing in the streams of the Eio Grande 

 basin, which covers the greater part of New 



