Volume VII. No. 159 



February 19, 1886 



SCIENCE 



Comment and Criticism. — Mr. Keltie's report on geographical education. — Dr. Shufeldt's plan for a 

 national bureau of science. — The great cost of library catalogues, and the possibility of its reduction 

 by co-operation. — An attack on the theosophical report of the English society for psychical research . 155 



Progress in India ............. 156 



Prejevalsky's explorations in Mongolia . . . . . . . . . . 157 



The U. S. geological survey ........... 158 



Geographical notes ............. 160 



Astronomical notes ............. 161 



St. Petersburg Letter. — The elasticity of air at low pressure. — Preparations for the solar eclipse of Aug. 18, 

 1887. — The coldest winter weather yet known. — The annual awai'd of medals at the geographical 

 society. — A movement for female medical education . ... ...... 161 



Notes and News. — Bird-protection in England. — Relief-maps at the geographical exposition. — A census 

 of the great lake fisheries. — Anatomical preparations at Washington. — The Geological railway guide. 

 — Statistics in regard to geographical research. — The growth of German cities ..... 162 



Letters to the Editor. 



Did Dr. Hayes reach Cape Lieber in his arctic 



exploration of 1861 ? — Charles A. Schott . 165 

 An open letter. — G. K. Gilbert . . . 166 

 Montana climate. — P.Koch .... 167 

 .Oil on troubled waters. — George F. Waters . 167 



The competition of convict-labor. — E. Langer- 



feld ..... ... 168 



Is the dodo an extinct bird? — Elliott Coues . 168 



"it 



Corrections of thermometers for pressure. — Sig . 168 



Tadpoles in winter. — C. C. Green . . . 168 



SCIENCE SUPPLEMENT. 



Virchow on acclimatization . . . . . . . • • • • .169 



The trade in spurious Mexican antiquities W. H. Holmes 170 



East Greenland Eskimo I 7 2 



The population of London 173 



Waste in wheat-crops . . . . . • . • • • • • • I 74 



Poisonous mussels from impure waters 1 75 



New books • • • .176 



The Science Company, Publishers, New York, 



743 Broadway. 



Price 15 cents 



