1 -*~ 



CONTENTS. 



e English species of Nummulites. By J. J. Lister 



ng Wood and Zignified cell-walls. By Professor 

 ID . . . . . . . . . 3 



^^,^_ _ the Spruce : a Note on the early stages of its 



evelopment. By E. ~E. Burdon , . . . . . ■' . .12 



Note on some peculiar features in seedlings of Peperomia. By , A. W. Hill 20 



On the dynamical significance of Kundtfs law of selective dispersion, in 

 connexion with the transmission of the energy, of trains of dispersive 

 waves. By Professor J. L armor . . . ' . . . . 21 



An attempted Synthesis of Uric Acid. By H. J. H Fenton ... 25 



Note on the Diffusion of Hydrogen through Palladium. By 0. W. 



Bichardson . . . . . . l . . . . .27 



Some Optically Active Nitrogen Compounds. By Miss M. B. Thomas and 



H. 0. Jones . . . . . ". " . . . . .33 



On the Inheritance of Tortoiseshell and Related Colours in Cats. 



By L. Doncaster . . . . . . . . . . 35 



On the ^vibrations of atoms containing 4, 5, 6, 7, and 8 corpuscles and 

 on the effect of a magnetic field on such vibrations. By Professor 

 J. J. Thomson . ...-...-,. . . . . . 39 



On the positive electrification of a rays, and the emission of slowly y 

 moving cathode rays by radio-active • substances. By Professor 

 J. J. Thomson . 



