SCIENCE 



Sixth Year. 

 Vol. XII. No. 296. 



NEW YORK, October 5, 1888. 



Single Copies, Ten Cents. 

 $3.50 Per Year, in Advance. 



Entered at New York Poat-Offlcs as Sooond-OlaBS Mail-Matter. 



Editorial 



Hudson Bay Route. 



A Lesson in Commercial Geography . 

 The Location of the Nicaragua Ship-Canal 

 The Brooklyn Institute . . . S. 



The Agassiz Seaside Assembly 

 Scientific News in Washington. 



The Nalion.Tl Geological .Siiivcy Libiary 

 The Influence of Light upon Tree-Growth . 



Ethnology. 



The Prehistoric Race of Spain 

 The Evokition of Ornaments 



Health Matters. 



Di.as;nosis of Human Blood 



Vaccination .... 



Electrical Science. 



Expeiiments in Proof of the Electro-magnetic Theory of Light 

 A New System of Electrical Distribution by Storage-Batteries 



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160 

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162 

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162 

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163 

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Book-Reviews. 



The Aryan Race .... 



On the Study of Words 



The Essentials of Geography 



Huw the Peasant Owner Lives 



Citizen's Atlas of American Politics, lySq-iSSS 



Publishers' Fall Announcements. 



Houghton, Mifflin, & Co. . 



Lee & Shepard . 



J. B. Lippincott Company 



Macmillan & Co. 



G. P. Putnam's Sons 



Roberts Bros. 



George Routledge & Sons . 



Ticknor & Co. . 



Miscellaneous 



Notes and News . 

 Letters to the Editor. 



Floods in ihe Lowir Mi.'sissippi . Julius Meyer, C.E. 



Chalchiuitl : A Note on the Jadeite Discussion D. C. Brinton 



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The Science Company, Ptidlishei^s, ^7 Lafayette Place, New York. 



London a^ent : G. E. Stechert, 26 Kinc William St., Sh'and. 



SANITARIUM 



— FOR — 



NERVOUS Dx 



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Washington, D. C. 



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SES, 



Dr. William A. Hammond announces to the medical profession that in November next he will return from 

 New York to Washington, D. C, where he is establishing, in a building especially being erected for the purpose, a Sa/ii- 

 tariufii for the treatment of mild and curable cases of mental derangement, diseases of the nervous system generally, and 

 cases of the morphia and chloral habits. His experience during many years has convinced him that most affections 

 embraced within the above-named classes can be treated much more successfully in an institution of this kind, under the 

 constant supervision of the physician and with the aid of means not otherwise at command, than when the patients are 

 seen by their medical advisers at intervals of several hours or days. 



The Sanitaruit/i, which is now being constructed under the superintendence of A. B. Mullett, Esq., late architect 

 of the United States Treasury department, is situated on Columbia Heights, at the corner of Fourteenth Street and Sher- 

 idan Avenue. The position is the highest in the immediate vicinity of Washington, the soil is dry, and all the surround- 

 ings are free from noxious influences. It is readily reached by the Fourteenth Street Railway, the cars of which run to 

 the doors. The building will be very large, and as perfect in structure and arrangements as may be possible from a 

 knowledge of sanitary science and of the requirements of such an institution. It will accommodate about thirty patients. 

 So far as the rooms, table, etc., are concerned, they will be fully equal to such as exist in the best hotels of our large 

 cities. Electricity in all its forms, baths, douches, massage, inhalations, nursing, etc., will be provided as may be required 

 by patients, in addition to such other medical treatment as may be deemed advisable, and without extra cost. 



A large Solarium for sun-baths and exercise in cold or inclement weather and to be heated with steam in winter, 

 is being constructed on the top of the main building. 



The Sanitarium will be open for the reception of patients on or about November ist, 1888. 



For further information Dr. Hammond can be addressed at his present residence, No. 43 West 54th Street, New 

 York, till November ist; after that date, at Washington, D. C. 



