U. S. DEPARTMENT OF AGRICULTURE. 



BUREAU OF PLANT INDUSTRY— BULLETIN NO. 90. 



B. T. GALLOWAY, Chief of Bureau. 



MISCELLANEOUS PAPERS. 



I. THE STORAGE AND GERMINATION OF WILD RICE SEED. 



By J. W. T. DUVEL, Assistant. 



II. THE CROWN-GALL AND HAIRY-ROOT DISEASES OF THE APPLE TREE. 



By GEOEGE G. HEDGGOCK, Assistant. 



III. PEPPERMINT. 



By ALICE HENKEL, Assistant. 



IV. THE POISONOUS ACTION OF JOHNSON GRASS. 



By A. C. CRAWFORD, Pharmacologist 



Issued February 21, 1906. 



/ 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE 



1906, 



