SCIENCE 



Sixth Year. 

 Vol. XII. No. 295. 



NEW YORK, September 28, 1888. 



Single Copies, Ten Cents. 

 $3.50 Per Year, in Advance. 



Entered at New York Post-Office ae Second-Oloss Mail-Matter. 



Editorial . -MS 



Tilt; Money-Grants by the British Associ.ilion. 



The Origin and Development of Language . 145 

 The Great Medical Congress. 



The First Triennial Session in Washington . . . 146 



Typhoid-Fever ...... 147 



Heat-Centres in Man ..... 147 



Searching for the Yellow-Fever Germ . . . 147 



Consumption among the Indians .... 148 



Cerebral Localization ..... 148 



Distiiiguislied Guests ..... 14S 



Major Powell's Report. 



Operations of the National Survey .... 148 



Yellowstone Park ..... 149 



Atlantic Coast Work ..... 149 



Archi^an Geology ..... 149 



Glacial Geology ...... 149 



Appalachian Division. — Classification of Soils . . 150 



Health Matters. 



Food-Preservatives ..... 150 



Contagiousness of Leprosy .... 151 

 Fatal Seasickness . . . . .151 



Milk 



Death by Drowning 



Inherited Deficiency of a Tooth 



Whooping-Cough 



The Power of ihe Imagination 



Mental Science. 



The Recognition of Sense-Impressions 



The Magnet and Hypnotism .... 



The Dreams of the Deaf ..... 



Electrical Science. 



Production of Light in the Future .... 



Energy absorbed by Different Lights 



The Shallenberger Electric Meter .... 



Book-Reviews. 



A New English Dictionary on Historical Principles . 

 Facts and Opinions relating to the Deaf, from America 



Notes and News ..... 

 Letters to the Editor. 



Recent Changes in the Magnetic Declination in Lower Cali- 

 fornia . . . . . . C. A, S. 



Archjeological Remains in the Costa Cuca (Guatemala) 



Gust. Bruehl, M.D. 



151 



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Is now binding and will be issued in 

 a few days. More than one-third of 

 the book is new matter, the whole 

 having been rewritten and thor- 

 oughly revised. The National For- 

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