iv CONTENTS 



PAGE: 



8. THE STATE PROTECTION OF WILD PLANTS . . 629 



A. R. Horwood. 



9. FURTHER SPECULATIONS UPON THE ORIGIN OF 



LIFE 638 



Charles Walker, D.Sc. 



10. THE MYSTERY OF RADIOACTIVITY .... 648 



H. E. A. 



11. REVIEWS: 



H. Charlton Bastian, "The Origin of Life." (Watts & Co.) . 656 

 R. E. Lloyd, "The Growth of Groups in the Animal Kingdom." 



(Longmans, Green & Co.) E. W. MacBride . . -657 

 A. F. Brown, "Sylviculture in the Tropics." (Macmillan.) 



Percy Groom ......... 659 



Mrs. E. S. Gregory, "British Violets: A Monograph." (W. 



Heffer & Sons, Ltd.) . . . . . . .661 



E. Frankland Armstrong, " The Simple Carbohydrates and the 



Glucosides." (Longmans, Green & Co.) J. C. I. . . 662 

 G. A. Schott, " Electromagnetic Radiation and the Mechanical 



Reactions arising from it." (Cambridge University Press) . 662 

 W. Suddards Franklin, " Electric Lighting — and Miscellaneous 



Applications of Electricity." (The Macmillan Company, 



New York) 663 



A. Dendy, " Outlines of Evolutionary Biology." (Constable & 



Co., Ltd.) 664 



INDEX 667 



