418 PROCEEDINGS OP THE AMERICAN ACADEMY. 



Researches on the Complex Inorganic Acids. By Wolcott 

 Gibbs. 



The Volumetric Determination of Combined Nitrous Acid. 

 By Leonard P. Kinnicutt aud John U. Nef. 



The ^ Phenyltribrompropionic Acid. By Leonard P. 

 Kinnicutt. 



On the Crystalline Form of Chlordibromacrjdic Acid. By 

 Oliver W. Huntington. 



On the Reduction of Different Star Catalogues to a Com- 

 mon System. By William A. Rogers. 



On a Method of Determining the Index Error of a Meridian 

 Circle at any Instant impending upon the Observed Polar 

 Distance of Polaris. By William A. Rogers. 



Studies in Metrology. First Part. By William A. 

 Rogers. 



On a New Method of Preparing Borneol from Camphor. 

 By C. Loring Jackson and A. E. Menke. 



