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SCIENCE: 



A WEEKLY JOURNAL OF SCIFGISr TIFIO PROGRESS. 



Vol. I, NO. 15. 



October 9, 1880. 



CONTENTS. 



The Unity of Nature, by the Duke of Argyll ; The Epizootic Epidemic; A Novel Celestial Object; English Criticism on the Bell 

 Photophone ; An Improved Microtome, by Prof. Willard Hailes; Paleontological Researches, I., by Prof. Henry S. Williams ; 

 Note on the Zodiacal Light, by Henry Carwill Lewis; On a Solution of Ferric Gallate and Ferric Oxalate as a Re-agent for the 

 Quantitative Analysis of Ammonia, by Prof. N. B. Webster; Science in France and in Germany, by Dr. C. K. Aiken ; The Action 

 of Sunlight on Glass, by Thomas Garfield ; Chemical and Physical Notes. 



Vol. I, No. 16. 



October 16, 18 8 0. 



CONTENTS. 



The New Warner Observatory : Palaeontological Researches, L, by Prof. Henry S. Williams; The " Yellows " of the Peach Tree, 

 by Prof. T. J. Burrill; A Remarkable Meteor, by Edwin F. Sawyer; The Telephone Among the Indians; The Antiquity of Man 

 in Eastern America, by Henry Carw ill Lewis; Pyrology, and Microscopical Chemistry, by Lt. Col. W. A. Ross ; Transforma- 

 tion of Planorbis, II., by Prof. Alpheus Hyatt; The Cuprifororus Series in Minnesota, by Prof. N. H. Winchell ; On Color 

 Blindness, by Dr. B. Joy Jeffries ; An Investigation of the Vibrations of Plates Vibrated at the Center, by Prof. Thomas R. 

 Baker ; Field Work by Amateurs, by Helen Harelin Walworth ; Comparative Zoology ; Letters to the Editor ; Notes and Queries ; 

 Physical Notes. 



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