Prcvosl. Action of humic acid on atmospheric nitrogen. — Rammelsberg. Experimental researches on 

 the amalgamation of Silver ores. 



+ Journal of the r. Geological Society of Ireland N. S. Voi. V. p. 3. 1879-80. Dublin, 

 1880. 8.° 



Reade. A Problem for Irish Geologists m Post-Glacial Geology. — fìaughton. Notes on the 

 Animai Water-discharge of Large Eivers; with Indications of some New Methods ot Calculation. — 

 O'Reilly. On the Occurrence of Microline Feldspar in the Dalkey Granites. — Ball. On Spheroidal 

 Jointing in Metatnorphic Eocks in India and elsewhere, producing a Structure resembling Glacial 

 " Roches Moutonnées ". — ■ Haughton. On Eossettis Law of Cooling, àpplied to the consideration of 

 the relative effeots of Sun-heat, Earth-heat, Star-heat, and Artmospheric Conditions, npon Clima- 

 tes during Geological Time. ~ Kmdhan. Anniversary Address to the Eoyal Geological Society of 

 Ireland. 1880. — Ball. On the Evidence in favour of the belief in the existence of Floating Ice in 

 India during the deposition of the Talchir (Permian or Permio-Triassic) Eocks. — Id. On the Goal 

 Fields and Goal Production of India. — Jd. On the Mode of Occurrence and Distribution of Gold 

 in India. 



'•"Journal of the r. microscopical Society. Ser.' IL Voi. I. part. 4. London, 1881. 8.° 



Uuncan. On some remarkable enlargements of the axial canals of sponge spicules and their causes. — 

 Richardson. On a blue and scavlet doublé stain, suitable for nerve and many others animai tissues. . 



+ Journal (The american) of science ed. by Dana et Silliman. 3d. Sur. Voi.- XXII. n. 127, 

 128. New Haven, 1881. 8.° 



127. Loomis. Contributions to Meteorology. — Ilovey. Coal Dust as an eleraent of dangev in 

 Mining. — Hidden. Notes on Minerai Localities in North Carolina. — Comstock. Vaviation in Length 

 of a Zinc Bar at the same Temperature. — Marsh. Eestoration of Dinoceras mirabile. — Liversidge. 

 Torbanite or "Kerosene Shale " of New South Wales. — Ferrei. Meteorological Eesearches, Part II. 

 Cyclones, Tornadoes and Waterspouts. — Sherman. Magnetic Observations made in Davis Strait, in 

 August and September, 1880. — - Mallet. Crystalline forni of Sipylite. — Whitfield. Observations on 

 the Structure of Dictyophyton and its affinities with certain Sponges. — Broadhead. Carboniferous 

 Eocks of Southeast Kansas. — Hilgard. Later Tertiary of the Gulf of Mexico. With amap. — Campbell. 

 Dufrenite from Eockbridge County, Va. — Silliman. Turquois of New Mexico. — 128. Bell. Modifi- 

 cation of Wheasttone's Microphone and its applicability to Eadiophonic Eesearches. — Rood. Method 

 of obtaining and measuring very high Vacua with a modified form of Sprengel-pump. — Dana. Geo- 

 logical Relations of the Limestóne Belts of Westchester County, New York: Origin of the Eocks of 

 the Cortlandt Series. — Shrpard. New Meteoric Iron, of unknown locality, in the Smitbsonian Mu- 

 seum. . — Michelson. The relative motion of the Earth and of the Luminiferous Ether. — Holden. 

 Observations on the Light of Telescopes used as Night-Glasses. — Whitfield. Nature of Dictyophy- 

 ton. — ùraper- Photographs of the Spectrum of the Comet of. June, 1881. — Young. Spectroscopic 

 Observations upon the Comet 6, 1811. — Harkness. Observations of Comet b, 1881, made at the 

 United States Naval Observatory. — Boss. Observations on the Comet 1881 b. — Wrighl. Polariza- 

 tion of Light from Comet 6, 1881. 



Journal (The quarterly) of pure and applied mathematics. N. 69. London, 1881. 8.° 



Jeffery. On Plaue Curves of the Fourth Class with Quadruple Foci. — Ilarley. Supplementary 

 Notes on a differential Equation. — ■ Muir. On Professor Cayley's ThéOrem regarding a Bordered 

 Skew Symmetric Determinant. — Taylor. On Harmonically Circurninscribed Conics. — Cayley. On 



r dz 



the Jacobian Sextic Equation. — Greenhill. Eeduction of the Elliptic integrals I — — : . 



r zdz 



and I = to Jacobi's Functions. — Ferrers. Property of a Quartic Curve with Three 



Doublé Points. — Hudson. Formulai in the Theory of Equations. — Frosl. On thè Twenty-seven 

 Lines, the Porty-five Triple Tangent Planes, and the Thirty-six Doublé Sixers of a Cubie Surfacc, 

 with a hint for the Construction of Models which give the position of the Lines when they are ali Real. 



