CONTENTS. 



Page 

 I. On certain substituted Crotonolactones and Mucobromic Acid. 



By Henry B. Hill and Robert W. Cornelison . 1 



II. A Revision of the Atomic Weight of Barium. Second Paper. 

 The Analysis of Baric Chloride. By Theodore William 

 Richards 55 



III. New Genera and Species of Laboulbeniaceoz, with a Synopsis 



of the Known Species. By Roland Thaxter .... 92 



IV. On the Formation of Volatile Compounds of Arsenic from 



Arsenical Wall Papers. By Charles Robert Sanger . 112 



V. On Chronic Arsenical Poisoning from Wall Papers and Fabrics. 



By Charles Robert Sanger 148 



VI. On the A isomorphic Linear Transformation of a Bilinear Form. 



By Henry Taber 178 



VII. On some Laws of Cleavage in Limax. A Preliminary Notice. 



By C. A. Kofoid 180 



VIII. Further Observations upon the Occurrence of Diamonds in 



Meteorites. By Oliver Whipple Huntington, Ph. D. 204 



IX. Double Habrids of Antimony and Potassium. By Francis 



Gano Benedict 212 



X. Certain Bromine Derivatives of Resorcine. By C. Loring 



Jackson and F. L. Dunlap 228 



