U. S. DEPARTMENT OF AGRICUL 

 BUREAU OF PLANT INDUSTRY— BULLETIN NO. 134. 



B. T. GALLOWAY, Chief of Bureau. 



t'ur: 



THE INFLUENCE OF A MIXTURE OF SOLUBLE 



SALTS, PRINCIPALLY SODIUM CHLORID, 



UPON THE LEAF STRUCTURE AND 



TRANSPIRATION OF WHEAT, 



OATS, AND BARLEY. 



L. L. HARTER, Assistant Physiologist. 



Issued August 20, 1008. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE, 



1908. 



