— XX — 



Burton. A Rapid Method for the Estiraation of Sulphur in Organic Compounds. — 

 Ilitchcock. The Action of Light on Silver Chloride. 



• Journal (American) of Mathernatics. Voi. XII, 1, 2. Baltimore, 1889. 



1. Forsyth. Systems of Ternariants that are Algebraically Complete. — Mac-Mahon. 

 Second Memoir on a New Theory of Symmetric Functions. — Appell. De l'homographie 

 en mécanique. — 2. Forsyth. Systems of Ternariants that are Algebraically Complete. — 

 Franklin. On some Applications of Circular Coordinates. — Cole. On Rotations in Space 

 of Four Dimensions. 



Journal (The American) of Philology. Voi. X, 2, 3. Baltimore, 1889. 



2. Elliott Speech Mixture in French Canada. — Ellis. A Contribution to the History 

 of the Transmission of Classical Literature in the Middle Age, from Oxford MSS. — Ma- 

 goun. The Asuri-Kalpa ; a Witchcraft Practice of the Atharva-Veda. — Easton. Associa- 

 tion in Substitution and Rotation. — 3. Emerson. On the Conception of Low Comedy in 

 Aristophanes. — Moulton. Notes in Verbal Morphology. — Learned. The Pennsylvania 

 German Dialect. — Callaway Jr. The Absolute Participle in Anglo-Saxon. 



" : Journal (The American) of Science. Voi. XXXIX, n. 233. New Haven, 1890. 



Mayer. Experiments with a Pendulum-electrometer. — Id. Electric Potential as mea- 

 sured by Work. - Becker. Elementary proof of the Earth's Rigidity. — Williams. Horn- 

 blende of St. Lawrence County. N. Y. — Cross. Note on some secondary minerals of the 

 Amphibole and Pyroxene groups. — Penfield. Spangolite, new Copper Minerai. — Dana. 

 Archaean axes of Eastern N. A. — Merrill. Metamorphic Sfrata of Southeastern New York. — 

 Hutchins. The Radiant Energy of the Standard Candle ; Mass of Meteors. — Eakins. Me- 

 teoric Iron from North Carolina. — Marsh. Distinctive Characters of the order Hallo- 

 poda. — Id. Additional Characters of the Ceratopsidae, with notice of New Cretaceous 

 Dinosaurs. 



f Journal de Physique théorique et appliquée. 2 e sér. t. IX, mai 1890. Paris. 



Gossard. Mesure des tensions snperficielles dans les liquides en caléfaction (méthode 

 des larges gouttes). — JVuilleumier. Détermination de l'ohm par la méthode électrodina- 

 mique de M. Lippmann. — Pionchon. Remarque sur la théorie des électromètres absolus. — 

 Baille et Féry. Etude d'un étalon pratique de force électromotrice. — Wasteels. Expé- 

 riences sur les siphons. 



f Journal flit die reine und angewandte Mathematik. Bd. CVI. 2. Berlin, 1890. 



Eberhard. Eine Classifieation der Allgemeinen Ebenensysteme. — Beck. Ueber die 

 Fundamentalaufgabe der Axonometrie. — Frobenius. Theorie der biquadratischen Formen. — 

 Stàckel. Zur Theorie der eindeutigen Functionen. 



* Journal of the Chemical Society. N. CCCXXX. May 1890. London. 



Meldola. Synthesis of Triazine-derivatives. — Pickering. The Nature of Solutions, 

 as Elucidated by the Freezing Points of Sulphuric Acid Solutions. — Ruhemann and 

 Blackman. Contributions to the Knowledge of Mucic Acid. Part I. Hydromuconic Acid. — 

 Heycock and Neville. The Molecular Weights of Metals when in Solution. — Meldola and 

 Hughes. The Formation of Indene-derivatives from Dibrom-«-naphlhol. — Judd. The Evi- 

 dence afforded by Petrographical Research of the occurrence of Chemical Change under 

 great Pressure. 



^Lumière (La) électrique. T. XXXVI, n. 18-21. Paris, 1890. 



18. Dieudonné. La station centrale de la ville de Poitiers. — Minet. L'électrolyse 

 par fusion ignée. — Cossmann. Exposition universelle de 1889; application de l'électricité 

 aux chemins de fer. — Gadot. Étude comparée sur la traction électrique et sur la traction 

 animale des tramears. — 19. Herzog et Stark. De la distribution de courant dans Ics 



