CONTENTS. 



Page. 



Introduction 7 



Effect of a mixture of soluble salts, principally sodium chlorid, on plant 



structure 8 



Methods of experiments 8 



Results of experiments 9 



Effect on the formation of bloom 9 



Effect on the thickness of the cuticle.. 11 



Effect on the size of the epidermal cells 12 



Effect of a mixture of soluble salts, principally sodium chlorid, on transpira- 

 tion 13 



Effect of salts when present in sufficient quantity to produce bloom 13 



Effect of salts when present in amounts too small to produce bloom ]5 



General significance of results 1G 



Summary.... 18 



Index 21 



134 5 



