u6 SCIENCE PROGRESS 



(12) A. E. H. Tutton, Connection between the Atomic Weight of Contained 



Metals and the Magnitude of the Angles of Crystals of Isomorphous 



Salts, Journ. Chem. Soc. 1893, lxiii. 337. 

 Connection between the Atomic Weight of Contained Metals and 



the Crystallographical Characters of Isomorphous Salts, Journ. Chem. 



Soc. 1894, lxv. 628 ; also 1896, lxix. 344 and 495 ; and 1897, lxxi. 846. 

 An Instrument for producing Monochromatic Light of any desired 



Wave-Length, Phil. Trans. Roy. Soc. 1895, A, clxxxv. 913. 

 An Instrument for Cutting, Grinding, and Polishing Section-Plates 



and Prisms of Crystals accurately in the desired Directions, Proc. Roy. 

 Soc. 1895, lvii. 324. Improvements on the same, Phil. Trans. 

 1899, A, cxcii. 457. 



— The Nature of the Structural Unit, Journ. Chem. Soc. 1896, lxix. 507. 



— A Compensated Interference Dilatometer, Phil. Trans. 1898, A, 

 cxci. 313. 



— The Thermal Deformation of the Sulphates of Potassium, Rubi- 

 dium, and Csesium, Phil. Trans. 1899, A, cxcii. 455. 



— Double Selenates containing Zinc and Magnesium with Potassium, 

 Rubidium and Caesium, Proc. Roy. Soc. 1900, lxvi. 248, and lxvii. 58; 

 and Phil. Trans. 1901, A, cxcvii. 255. 



— Ammonium Sulphate and the Position of Ammonium in the Alkali 

 Series, Journ. Chem. Soc. 1903, lxxxiii. 1049. 



— The Elasmometer, a New Interferential Elasticity Apparatus, Phil. 

 Trans. 1904, A, ccii. 143. 



— Ammonium-Magnesium and Ammonium-Zinc Sulphates and 

 Selenates, Journ. Chem. Soc. 1905, lxxxvii. 11 23. 



— Topic Axes, and the Topic Parameters of the Alkali Sulphates and 

 Selenates, Journ. Chem. Soc. 1905, lxxxvii. 1183. 



