CONTENTS. 



VOL. XII. 



Notes on the Anatomy of Macrozamia heteromera, Moore. By Agnes 



Robertson 1 



Notes on the genus Liparis. By J. J. Lister .... 16 



Further experiments on radio-activity from rain. By C. T. R. Wilson 17 

 A case of extreme visceral dislocation : with remarks on the functional 



interpretation of the agminated glands of the intestine. By E. 



Barclay-Smith 18 



Notes on a Vibration Magnetometer and on the Ball-ended Magnets of 



Eobison. By G. F. C. Searle 27 



On Cavitation in Liquids, and its Occurrence in Lubrication. By S. 



Skinner . . . 34 



The Coral Reefs of Pemba Island and of the East African Mainland. 



By Cyril Crossland .36 



Note on spontaneous ionization in air at different temperatures and 



pressures. By J. Patterson 44 



Note on the behaviour of a Potassium Amalgam Cathode in a Vacuum 



Tube. By Theodore Lyman 45 



On rearing the later stages of Echinoid Larvae. By L. Doncaster . 47 

 Note on the Resolution of Compound Characters by Cross-breeding. By 



W. Bateson 50 



On the variation with the wave-length of the double refraction in strained 



glass. (Second Paper.) By L. N. G. Filon 55 



On the invariant factors of a determinant. By H. F. Baker 



On Automorphic Functions and the general theory of Algebraic Curves. 



By H. W. Richmond 



On the rise of a Spinning Top. By E. G. Gallop 



On the Dynamics of the Electric Field. By Prof. J. J. Thomson 



Rust-fungi and the u Mycoplasm" Hypothesis. By Prof. H. Marshall 



Ward 



On Radio-activity from Snow. By C. T. R. Wilson . 



Note on the Slipperiness of Ice. By S. Skinner .... 



On the probable presence in the Sun of the newly discovered gases of the 



Earth's Atmosphere. By Prof. G. D. Livetng . . . . 



65 



78 

 82 

 83 



84 

 85 



