CONTENTS. 



PAGE 



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



Robertson (with Plate I.) . . . . . . . . 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 agminateol glands of the intestine. By E. 

 Barclay-Smith . . . ~ " . . . . . . .18 



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



Robison. 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 



