CONTENTS 



Page 



Originai, Papers 



Botany. — ^The effect of salts of boron upon the distribution of desert vegeta- 

 tion. Karl F. Kei<lermak 481 



Mineralogy. — The nomenclature and classification of sulfide minerals. Edgar • 

 T. Wherry 487 



Proceedings 

 Philosophical Sodety of Washington 497 



Botanical Sodety of Washington 500 



SciENTnric Notes and News 503 



