Volume VII. No. 162 i 



March 12, 1886 



SCIENCE 



Comment and Criticism. — Suicides in England and Wales in relation to age, sex, season, and occupation. 

 — A proposition that the weather predictions shall be revised by local observers. — The study of 

 philosophy. — A revival of cholera in Spain. — The phylloxera in Cape Colony ..... 229 



The naval observatory . .......... 231 



The swamps of the United States . . . . . . . N. S. Shaler 232 



Geographical notes ............. 233 



London Letter. — The death of Mr. Henry Bradshaw, librarian of the University of Cambridge. — Mathe- 

 matics no longer required for honor candidates in classics. — The study of engineering at the University 

 of London. — An elaborate private electric installation. — The discussion of Professor Hughes's paper 

 on the proper nature and form of electric conductors .......... 234 



Boston Letter. — Progress of the topographical survey of Massachusetts, and the prospect of an exact deter- 

 mination of the town boundary-lines. — Forest preserves near Boston. — A dinner to celebrate the 

 decennial anniversary of the Appalachian Mountain club. — The summer school at Annisquam . 235 



Notes and News. — Danger of poisoning from arsenic in wall-papers. — A possible aid to agricultural 

 experiment-stations. — The experimental tea-farms to be abandoned. — A proposed Hebrew university 

 in New York City. — Convenient ephemerides for amateur -astronomers. — Earthquakes in Japan. — A 

 new method for producing immunity from contagious diseases ........ 236 



Letters to the Editor. 



Bishop's ring during solar eclipses. — W. M. D. 239 

 A trap-door spider at work. — Mary T. Palmer 240 

 The destruction of birds. — F. H. H. ; Amos W. 



Butler .241 



A recent ice-storm. — L. A. Lee . . . 242 

 Apropos to Pteranodon and Homo. — S. Lockwood 242 

 Is the dodo an extinct bird ? — R. W. Shtifeldt . 242 

 Chinook winds. — G. H. Stone .... 242 



SCIENCE SUPPLEMENT. 



The Rocky Mountains as seen from the Canadian Pacific railway . Ernest Ingersoll 243 

 The origin of human races and types .......... 245 



An old-fashioned book ........ .... 246 



Comparative distribution of Jewish ability ......... 247 



Recent Challenger reports ............ 249 



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