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Sixth Year. 

 Vol. XI. No. 272. 



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Map of the Upper Yukon River. 



Editorial 



The Use of Oil to calm the Waves. —The Need of more Edit- 

 ors ill Washington, — The Marble Terrace of the Capitol. 

 — The Boston Zoological Garden. — The Universal Lan- 

 guage. 



Yukon Expedition, 1887 



The Geological Observations of the Yukon 

 Expedition, 1887 . . George M. Dawson 



Scientific News in Washington. 



National Academy of Sciences . . . ■ 



Detection of Adulteration of Lards 



Algonkin Melalsmiths ..... 



The Siana Indians ..... 



Some Recent Entomological Matters of International Concern 



Electrical Science. 



Elt-ctrical Energy from Carbon without Heat 



Maximum Efficiency of Incandescent Lamps 



Electric Lighting and Insurance .... 



The \)e Hernado Accumulator .... 



'83 



1 84 



187 

 1S7 



Health Matters. 



Lung-Expansion and Consumption . 



Leprosy in America 



Burning Garbage .... 



Book-Reviews. 



Volcanoes and Earthquakes 



Lectures on the Physiology of Plants 



Plmtography applied to Surveying . 



Beginner's Anatomy, Physiology, and Hygiene 



A Treatise on Algebra 



Eighteenth Annual Report of the Massachusetts Bureau of 



Statistics of Labor 

 Manual for Instruciion in Domestic Science . 

 Mechanics of Materials 

 Chips from a Teacher's Workshop . 



Notes and News 

 Letters to the Editor. 



Is the Rainfall increasing on the Plains? George E. 



Scarlet-Fever . . . Jo/in Dixwcli 



Queries ...... 



Curtis 

 M.D. 



189 



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191 

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194 

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