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"E are preparing a list of Professional Scientists, and of all those engaged in scientific investiga- 

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We invite all engaged in original research, whether professionals or amateurs, to forward their names 

 and addresses for registration, giving their names and style in full, and the particular line of research followed. 



We desire that the list of Physicists shall be very complete as we understand that such a list does not 

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We guarantee to forward all names and addresses received by us to the Smithsonian Institute, Washing- 

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Compliance with this request will result in many conveniences to those concerned, as when the lists 

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SCIENCE: 



A. WEEKLY JOURNAL OF SCIENTIFIC PROGRESS. 



Vol. I, NO. 12. 



September 18, 18 8 0. 



CONTENTS. 



Continuation of Report of Meeting of American Association for the Advancement of Science (Boston) ; Address (verbatim), of Professor 

 Louis Agassiz, Paleontological and Embryological Development ; Editorial on same ; Chemistry as an Art, and Chemistry as a 

 Science, by Professor J. M. Ordway ; on the Aurora and Zodiacal Light of May 2, 1877, by Henry Carwill Lewis ; Observations on 

 Brachiopods, by Professor Edward S. Morse; on the Absolute Invisibility of Atoms and Molecules, by Professor A. E. Dolbear ; 

 The Karnes or Eskars of Maine, by Geo. H. Stone; on the Thermo-electric Elec ro-motive Power of Fe. and Pt. in vacuo; Spectro- 

 scopic Notes on Observations, Chiefly Solar, 1879-1880, by Professor C. A. Young; Mountain Sites for Astronomical Observations, 

 by Professor O. Stone ; Books Received. 



Vol. I, No. 13. September 25, 1 88O. 



CONTENTS. 



Edison'* Electric Light ; New Fossil Horse; Peerages for English Scientists ; August Perseids, 1880, by Edwin F. Sawyer; Notes on 

 Japanese Pulmonifera, by Professor Edward S. Morse ; Friction ol Lubricating Oils, by C. J. H. Woodbury ; Law of Land Form- 

 ing on our Globe, by Professor Richard Owen ; Investigation of the Vibrations of Plates, by Thomas R. Baker ; Types of Pottery, 



ingon our ijione, uy rroiessor Kicnara uwen ; investigation 01 tne vinrations 01 nates, uy 1 nomas k. naner; 

 by Prof'- SOT Edward S. Morse; Mount Hamilton, Cal., (illustrated) ; Full Report of Meeting of the American ! 

 scopists, Detroit; Preservation of Fossil Insects, by Prolessor J. W. Pike; Problems in Watson's Co-ordinates; 

 Brandon Period, by Henry Carwill Lewis; American Society of Mechanical Engineers; Physical Notes. 



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