SCIENCE. 



111 



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The New $50 Microscope 



{See Illustration?) 

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SCIENCE 



A. "WEEKLY JOTJIiN^L OF SCIENTIFIC PROGRESS 



Vol. 11. No. 47, ------- May 2 I, 1881. 



CONTENTS. 



The American Museum of Natural History, Central Park, New York, (Edit.) ; The Storage of Electricity ; Sensibility 

 and its Diverse Forms, Translated from the French of M. Oltramare by the Marchioness Clara Lanza ; Contribution 

 toward a New Cosmic Hypothesis, by Samuel J. Wallace ; American Chemical Society ; A New Rotifer, by H. T. 

 Atwood ; The Discrepancies in Recent Science (Correspondence) ; Primeval Rotation and Cosmical Rings, II., by 

 Edward L. Larkin ; Books Received ; Notes, Astronomical, Chemical, Microscopical, &c, &c, &c. 



Subscription, Four Dollars a Year. 



Single Numbers, Ten Cents. 



