Eleventh Year. 

 Vol. XXI. No. 538. 



MAY 26, 



Contents. 



The Norian Rocks of Canada. Andrevj C. 

 Lawson ' 



Geology of Tucumcari. New Mexico. W. F. 

 CummiTis ' 



The Marine Biological Station of the Uni- 

 versity OF Texas. Charles L. Edtcards . J 



Method of Making a Sanitary Investigation 

 of a River. Chas. C. Broirn : 



Notes and News ' 



Sign Language in Print. Frederick Starr ' 



Letters to the Editor. 



Sham Biology. Henry F. Nachtrieb.. 



On Methods of Defending the Existence of 

 a Sham Biology in America. Comvay 

 MacMillan S 



Photographs of Scientific Men. ^f€lrc^is 

 Benjamin S 



The PalEeolithic Man in Ohio. Henry W, 



of the United States 



Book Reviews. 



Entered at the Post-Offlce of New York, N.Y., 

 Second-Class Mail Matter. 



LIGHTNING DESTROYS! 



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Entirely new departure in pro- 

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One hundred ft. of the Hodges 

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Correspondence solicited. Agents wanted, 



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CORNELL UNIVERSITY. 



Summer Courses "SLll^^r^t^l^r^l 



Greek. Latin, German, French. English, Elocution. 

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Summer Courses are also offered in the SCHOOL 

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For circulars apply to 



The Registrar, Cornell University. Ithaca, N. Y, 



Pennsylvania Bedford Springs Mineral Water 



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It has been used medicinally and prescribed by 

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DIRECTIONS:— Take one or two glasses about a 

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MACMILLAN & CO.'S NEW BOOKS, 



Third Edition of Sir John Lubbock's Kew Hook. 

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THE THEORY AND PRACTICE OF 



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ELECTRICAL PAPERS. 



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THE VISIBLE UNIVERSE. 



Chapters on the Origin and Construction of the Heavens. By J. Ellard Gore. With Stellar Photographs and other Illustrations 



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ELECTRIC LIGHTING AND POWER DISTRIBUTION. 



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