Volume VII. No. 176 



June 18, 1886 



SCIENCE 



Comment and Criticism. — Report of the Imperial health office at Berlin on butter subs'itutes. — Dr. Gudden, 



the King of Ba\ aria's physician ............... 537 



Aspects of the economic discussion 

 Flooding the Sahara 



S. Neivcomb 538 

 Geo. IF. Ply mpt on 542 



London Letter. — Scarlet-fever and infected milk. — Report of the ensilage commissioners. — Report of the 

 deputy master of the mint. — Electric-light installation. — Recent weather in Britain. — Death of 

 Surgeon-Major T. R. Lewis. — Results of Mr. Caldwell's work on the marsupials, etc. . . . 544 



Notes and A'ews. — The next meeting of the American association for the advancement of science. — 

 Appalachian club map of the White Mountains. — Courses in political and social science at Yale 

 college. — The bottom of the Lake of Constance and Lake Geneva. — Delicacy of the sense of smell in 

 man — A visual illusion. — Color-blindness among the employees of French railroads. — Walking in 

 health and disease. — Structure of the corpus callosum. - — Lubbock's Flowers, fruits, and leaves . . 546 



Letters to the Editor. 



Barometer exposure. — John LeConte . . .550 

 Ambly stoma and Gordius. — S. Gar/nan . 550 



Penetrating - po .ver of arrows. 



L f\ 



550 



SCIENCE SUPPLEMENT. 



How to teach geography . . . . 



The occupations of the British people 



Mrs. Sidgwick and the mediums 



The evolution of language 



Distribution of colors in the animal kingdom 



A new English dictionary .... 



• 55i 



• • • 552 

 • -554 

 Joseph Jastrow 555 



• 557 



. C H. Toy 557 



The Science Company, Publishers, New York, 



47 Lafayette Place. 



Price 15 cents. 



