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CONTENTS." 



Page. 



The storage and germination of wild rice seed 5 



Introduction . 5 



Distribution 5 



Habitat 6 



Germination of the seed 7 



Fall seeding versus spring seeding 7 



Directions for storing the seed 8 



Detailed conditions and results of storage experiments 9 



Packing for transportation 11 



Methods of making germination tests 11 



Effect of temperature on germination 12 



Summary 12 



Description of Plates I and II 14 



The crown-gall and hairy-root diseases of the apple tree 15 



Introduction ". 15 



Two distinct diseases, crown-gall and hairy-root 15 



Types of apple crown-gall 16 



Effect upon the length of life of the apple tree 16 



Suggestions to nurserymen 16 



Data desired 17 



^Peppermint 19 



Description 19 



Countries where grown 20 



Peppermint cultivation in the United States 21 



Cultivation 22 



Conditions injurious to crop 23 



Harvesting and distillation 24 



Description of still 25 



Peppermint oil and menthol 26 



Export of peppermint oil 27 



Prices of peppermint oil 28 



The poisonous action of Johnson grass 31 



a The four papers constituting this Bulletin were issued in separate form on September 7, November 

 17, December 28, 1905, and January 17, 1906, respectively. 



3 



