— cxxv — 

 Agricoltura {V) italiana ecc. - Pisa, luglio 1 888 - febbraio 

 1889. 



*Almanacli der K. Akademie der Wissenscfiaflen. - 37 Jtihr. 

 -Wien, 1887. 



*American Chemical Joìinud., ediled by Ira Remsen. - Voi. 

 X, n. 3. - Baltimore, May 1888. 



A. M. Comey and C. Loring Jackson. The Action of Fluoride of Si- 

 licon on Organic Bases. — T. W. Richards. A Deterraination of 

 the Relation of the Atoinic Weights of Copper and Silver. — In- 

 vestigation on the Atomic Weight of Copper. — Additional Note 

 on the Relative Values of the Atomic Weights of Hydrogen and 

 Oxygen. — W. 0. Atwater. On Sources of Error in Determina- 

 tions of Nitrogen by Soda-Lime, anJ Means for avoiding Ihem — 

 T. H. Norton and /. H. Westenhoff. On the Action of Silicon Te- 

 trafluoriile on Acetone. — On the Limits of the Bromination of 

 Acetone at o", and on the Action of Ammonium Sulphocyanide 

 on Monobrom-Acetone. — I. T. Kebler and T. H. Norton. On the 

 Action of Chlorine on Acenaphthene. — A. J. Carson and T. H. 

 Norton. On the Uranates of Ammonium and of Certain Aniines. 

 — T. H. Norton. On Some new Nitroprussides. — H. W. Veld. 

 Ànalysis of Lockport Sandstone. — R. G. Grisson and B. Thorp. 

 Hew Halogen Compounds of Lead. — Action of Chlorous Acid upon 

 Heptylene. — J. H. Manning and G. W. Edwards. Some New Salts 

 ofCamphoric Acid. — /. H. Maìinìng. Decomposition of Potas- 

 sium Cyanide. — F. P. Venable. On the Bromination of Heptane. 



*American Journal of Mathemnlics. - Voi. IO, n. 3. - Balti- 

 more, aprii 1888. 



E. Goursat. Surfaces telles que la somme des rayons de courbure 

 principaux est proportionelle. — K. Heun. Remarks on the Lo- 

 garitmich Integralo of Regalar Linear Diifi'rential Equations. — C. 

 H. Chapman. On some Applications of the Units of an n-fold 

 Space. — E. H. Moore. A Problera suggested in the Geometiy 

 of Nets and Curves and applied to the Theory of Six Points lia- 

 ving multiply Perspective Relalions. — G. Humhert. Sur l'orien- 

 lation des systèmes de droites. 



