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A WEEKLY NEWSPAPER OF ALL THE ARTS AND SCIENCES. 



PUBLISHED BY N. D. C. HODGBS, 874 BROADWAY, NEW YOEK. 



Tenth Year. 

 Vol. XIX. No. 480. 



APRIL 15, 1892. 



Single Copies, Ten Cents. 

 $3.50 Per Year, in Advance. 



Contents. 



A New Patent Office 211 



Observations on the Growth and Chem- 

 ical Composition op the Maize 

 (Corn) Plant. E. B. Farrington 211 

 The Tomb of King Ambnhotep. S. Y. 



Stevenson 212 



A Simple Apparatus fob the Produc- 

 tion OF LissAJOu's Curves. T. 



Proctor Hall. . 313 



Valuable Experiments in Vein-Forma- 

 tion. Theo. B. Comstock 314 



EOYAL Meteorological Society 214 



Notes and News 215 



The Evolution of Commerce 216 



Letters to the Editor. 



The Loup Rivers of Nebraska. W. 



M. Davis 230 



The Persistency of Family Traits. 

 Edward H. Williams, Jun 321 



Book Reviews. 



The Great Earthquake of Japan, 



1891 232 



Among the Publishers 223 



Entered at the Pos'-Offlcf nf Mew Yorfe. N.Y., as 

 Seoond-ClasB Mail Matter. 



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The American Geologist for 1892. 



Edited by Prop. S. Calvin, University of Iowa; De. E. W. Clatpole, Buchtel College; John Etkbman, 

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