INDEX SLIP. 
Tutton, a. E.—The Thermal Deformation of the Crystallised Normal 
Sulphates of Potassium, Rubidium, and Caesium. 
Phil. Trans., A, vol. 192, 1.S99, pp 455 498. 
Goniometer, improved cutting and grinding, for preparation of Plates and 
Prisms of Crystals. 
Tuttox, a. E. Phil. Trans., A, vol. 192, 1899, pp. 455-498. 
Thermal Expansion of Crystals, determination of. 
J UTTON, A. E. Phil. Trans., A, vol. 192, 1899, pp. 455-198. 
