MUTATIONS AND EVOLUTION 



BY 



R. RUGGLES GATES. 



Ph.D., F.L.S., Reader in Botany at the University of London, King's College^ 



NEW PHYTOLOGIST REPRINT, 

 No. 12. 



PRICE - SIX SHILLINGS. POSTAGE - 4o 



WILLIAM WESLEY & SON, 

 ^EX STREET, STRAND, W.C.2, LONDON 



/ 1921. 



