4 CONTENTS. 



The drug known as pinkroot — Continued. Page. 



Minor adulterants 48 



Methods of distinguishing pinkroot from its substitutes 48 



Orchard grass ... 45 



Introduction 45 



Methods of culture 4H 



Seeding 4H 



Mixtures with red clover 47 



Mixtures with other grasses 48 



Life of meadows 49 



Uses and value 4V) 



Hay 49 



Pasture 50 



Seed 50 



Harvesting the seed crop 51 



Thrashing 51 



Handling the aftergrowth 52 



Value of the straw 52 



Weeds in orchard grass seed fields 53 



Other grasses in fields intended for seed 54 



Summary 55 



The effect of copper upon water bacteria 57 



Introduction - 57 



Resistance of various bacteria 59 



Effect of carbon dioxid on viability of Bacillus coh' and Bacillus typhi 64 



Copper sulfate and filtration 69 



Conditions affecting legume inoculation 73 



Introduction 73 



Use of lime 74 



Effect of soil conditions upon bacteria 76 



Effect of heavy inoculation 79 



Effect of aeration 81 



Associative action of bacteria 82 



Summary - 83 



100 



