— CXXII1 



griechischen Sakralaltertiimer. — Schiller. Jahresbericht iiber romische Geschichte und 

 Chronologie fiir 1887. — 8-9. Mùller. Jahresbericht iiber Thukydides fiir 1877-1887. — 

 Sitzler. Jabresbericht iiber Herodot fur 1884-1888. — Gùthling. Vergilius (1885-1888). — 

 Schiller. Jahresbericht iiber romische Geschichte und Chronologie fiir 1887. — li. Jahres- 

 bericht iiber die romischen Staatsaltertiimer fiir 1887. 

 'Jakttagelser (Meteorologiska) i Sverige. 1880-1884. Kiòbenhavn. 

 f Journal (American Chemical). Voi. XI, 5. Baltimore, 1889. 



Remsen. On the Nature and Structure of the Doublé Halides. — Id. and Graham. 

 On the Conduct towards Alcohol of the Diazo Compounds obtained from the three Nitra- 

 nilines, and of those obtained from the three Amido-Benzoic Acids. — Remsem and Dohrne. 

 On o-Sulphobenzoic Acid and Some of its Derivatives. — Morse and White. The Dissocia- 

 tion of the Sulphides of Cadmium and Zinc by means of Metallic Cadmium and Zinc. — 

 Smith and Frankel. The Electrolytic Separation of Cadmium from Zinc. — Maxwell. Of 

 the Solubility of the Constituents of Seeds in Prepared Solutions of Ptyalin, Pepsin and 

 Trypsin. 



'''Journal (American) of Mathematics.Vol. XI, 4. Baltimore, 1889. 



Cayley. On the Surfaces with Piane or Spherical Curves of Curvature. — Morley. 

 On the Geometry of a Nodal Circular Cubie. — Fine. On the Functions defined by Diffe- 

 rential Equations with an Extension of the Puiseux Polygon Construction to these Equa- 

 tions. — Goursat. Sur les solutions singulières des équations différentielles simultanées. — 

 Rowland. Electromagnetic Waves and Oscillations at the Surface of Conductors. — 

 Fields. The Expression of any Differential Coeftìcient of a Function of a Function of any 

 number of Variables by aid of the corresponding Differential Coefficients of any n Powers 

 of the Function, where n is the Order of the Differential Coefficient. 



■^Journal (The american) of science. Voi. XXXIX, n. 230, febr. 1889. New 

 Haven. 



Willson. Magnetic Field in the Jefferson Physical Laboratory. — White. Cretaceous 

 Plants from Martha's Vineyard. — Walcott. Keview of Dr. R. W. Ells's Second Report on 

 the Geology of a Portion of the Province of Quebec. — Michelson. Measurement by Light- 

 waves. — Gentil and Penfield. Lansfordite, Nesquehonite, a new Minerai, and Pseudomorphs 

 of Nesquehonite, after Lansfordite. ■ — Fereil. Weber's Law of Thermal Radiation. — 

 Selwyn. Tracks of organic origin in rocks of the Animikie group. 

 f Journal de Physique théorique et appliquée. 2 tì sér. t. IX, févr. 1890. Paris. 



Gouré de Villemontée. Recherches sur la différence de potentiel au contact d'un 

 metal et d'un liquide. — Krouchkoll. Variation du coefficient de frottement du platine 

 polarisé contre le verre dans l'eau acidulée. — Guillaume. Sur la the'orie des dissoln- 

 tions. — Ekama. Manière d'obtenir la constante a 2 dans la théorie d'Airy de l'arc-en-ciel. — 

 Lemoine. Calcul de Taccroissement de l'e'nergie interne de l'unité de masse d'un gaz qui passe 

 de la pression P à la pression P' sans travail extérieur et sans variation de température. 



■^Journal of the Chemical Society. N. CCCXXVII, febr. 1890. London. 



Stanley Kipping and Perkin. Action of Dehydrating Agents on «w-Diacetylpentane. 

 Synthesis of Methylethylhexamethylene. — Id. id. «w-Diacetyl-ftw-diethylpentane. — Thorpe 

 and Robinson. Frangulin. — Ruhemann. The Action of Chloroform and Alcoholic Potash 

 on Hydrazines. — Brown and Morris. Note on the Identity of Cerebrose and Galactose. — 

 O'Sullivan. Arabinon, the Saccharon of Arabinose. 



•^Journal of the r. Microscopical Society. 1889, p. 6 th ; 1890, p. l st . London. 



Bennett. Freshwater Algee and Schizophycese of Hampshire and Devonshire. — Czapski. 

 On an Objective with an Aperture of P60N.A. (Monobromide of Naphthaline Immersion) 

 made according to the Formulae of Prof. Abbe in the Optical Factory of Cari Zeiss. 



