~ CGLVJII — 



biete Africas. — Konig. Vcrzeichniss dar auf der Insel Borkuin 

 gesammelten Lepidopteren. — W. Hess. Beitràge zu einer Fauna 

 der Insel Spiekeroog. — /. Hunlemann. Zur Fauna und Flora 

 der Insel Arngast im Jadebuson. — H. Fischer. Bericht ùber eine 

 Anzahl Steinsculpluren aus Costaiica. — W. MilUer-Erzbach. Die 

 Magnelische Inclinalioii von Bremeu iu Màrz 1880. — Vergleichen- 

 den Beobachlungen ubar den Untcìbcliied in der Spaunkrafl des 

 Wasserdarapfs bei verscbiedenen Kygroskopischcn Substanzeii. — 

 i.O. Lang. Zur Abwehr. 



Almanacli Royal Insurance Company. - Montreal, 4 881. 



^American Chemical Journal. - Voi. Ili, n. 2-3. - Baltimo- 

 re, May-June 1881. 



/. W. Mallet. Revision of the Atomic Weight of Alluminium. — On 

 the Molecular Weight of Hydrotluoric Acid. — B. Hill. On Fur- 

 furol and cerlain of its Derivales. — C. F. Mabery and R. Lloyd. 

 On the Diiodbromacrylio and Ghlorbiorn.icrylic Acids. — P. Duìi- 

 nington. On Miciolitc from Amelia Co., Virginia. — /. Remsen. 

 On the Conduct of Fniely divided Iron towards Nitrogen. — On 

 the Deposition of Copper on Iron in a Magnetic Field. — H. N. 

 Morse and W. C. Day. Determination of Chromium in Ghrome 

 Iron Ore. — W. D. Schoonmaker and /. A. Van Mater. Dini- 

 troparadibrombenzols and Their Derivates. — F. W. Clarke. Some 

 Doublé and Triple Oxalates contaiuing Chromium. — The Titra- 

 tion of Tartaric, Malie and Citric Acids with Potassium Perman- 

 ganate. — R. B. Warder. Relation between Temperature and the 

 Rate of Chemical Action. — R. D. Coale and /. Remsen. Oxida- 

 tion of Sulphaminemtatoluic Acid in Alkaline and in Acid Solu- 

 tion. — /. Remsen and P. H. Broun. Goncerning Mesitylenic 

 Sulphinide. 



^American Journal of Malhematics. - Voi. Ili, n. 3. - Cam- 

 bridge, Sepfember 4 880. 



S. Newcomb. A Melhod of Developing the Perturbative Function of 

 Planetary Motion. — Miss Christine Ladd. On De Morgan's Ex- 

 tension of the Algebraic Processes. — H. A. Rowland. On the 

 Motion of a Perfect Incorapressible Fluid when no Solid Bodies 

 are Presenl. — T. Craig. On Certain Possible Cases of Steady 

 Motion in a Viscous Fluid. 



