A 





S C I E N ' 



Tenth Yeab. 

 Vol. XX. No. 314. 



DECEMBER 9, 1892. 



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Contents. 



Brilliant Aurora of 189'2. Lewis Swift. 



The Psychological Laboratory at Yale 3:^4 



Notes and News 397 



The Reticulated Structure op Human Eed 

 Blood-Corpuscles. Alfred C. Stokes 



330 



Letters to the Editor. 



The Uretaceouo at Gay Head, Martha's Vine- 

 yard. David IVhite 33-^ 



On the Vernacular Name of the Genus 

 Harporbyuchus. R. W. ^hufeldt 333 



Meteoric Shower. C. W. Kempton -Vi^ 



Remains of the Mastodon Recently Found in 

 Tennessee. S. W. McCallie 333 



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