PLANT SCIENCE MONOGRAPHS 



Uniform with this volume will be: 



* Biology of Mycorrhiza 



Encyclopaedia of Weeds and Their Control 



Grassland Improvement . 



Mangroves of the World 



Mutations and Crop Improvement 



*Plant Growth Substances 



Plant Life and Nitrogen . 



*Salt Marshes and Salt Deserts of the Wor 



*Seed Preservation and Longevity 



Sex in the Lower Ormnisms 



Id 



J. L. Harley 

 L. J. King 

 A. T. Semple 

 V. J. Chapman 

 A. Gustafsson 

 J. L. Audus 

 G. Bond 

 V. J. Chapman 

 L. V. Barton 

 H. P. Papazian 



FURTHER TITLES ARE UNDER CONSIDERATION 



The feeding and clothing of the world's teeming millions can continue to keep 

 abreast of population increases through the help of effective application of 

 research in the plant sciences. The publication of this research, by which means 

 a scientist or technologist makes his findings known to workers elsewhere, tends 

 to be scattered in literally hundreds of botanical and agricultural journals 

 emanating from most of the countries of the world. Often it appears in such 

 polyglot arrays of fragments that it is extremely difficult to bring together even 

 in some narrow 'line' of endeavour. Consequently advances are slowed and 

 interests unnecessarily divided, scientific and human progress being thereby 

 retarded. 



The present series of 'monographs' is designed to remedy these deficiencies 

 in especially important or attractive specialities, by publishing individual book- 

 length accounts of the entire background and current progress in their fields. 

 Such detailed surveys, being fully documented and plentifully illustrated, 

 should prove of real value to the world at large in constituting the bases for 

 further advances on the ever-expanding horizons of scientific research, and so 

 lead to improved productivity and, ultimately, standards of living. They are 

 prepared by specialists usually of international reputation for their work in the 

 field chosen, and often culminate a lifetime of active investigation. Being as 

 up-to-date as possible, they will often embody significant advances not pre- 

 viously published. 



*Already published and available 



FOR DETAILS OF A COMPANION SERIES SEE THE END OF THIS BOOK 



