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JANtJAKT, 1906 



The Policy of France toward the Mississippi Valley in 

 the Period of Washington and Adams. Frederick 

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Improvising a Government in Paris in July, 1789. 



Henry E. Bourne. 



The Treaty of a Guadalupe-Hidalgo. Jesse S. Reeves. 



Materials in British Archives for American Colonial 

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The Study of 

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TABLE OP CONTENTS. 



On the Differential Transformer. A. Trowbridge. 



Heat of Vaporization of Liqnid Air. 



R. C. Fenner and F. K. Richtmyer. 

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The Velocity of Sound. Thos. C. Hebb. 



The Arc Ina IVIagnetic Field. C. D. CHILD. 



Apparatus to Illustrate Pressure of Sound Waves. 



R W. Wood. 



American Physical Society. Minutes of the twenty- 

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