CONTENTS. y 



Page. 



Observed differences in crown-gall organisms from various sources 127 



Morphology and behavior toward stains 127 



Methods of study 127 



Newest daisy 128 



Old daisy 128 



Peach 128 



Hop 128 



New rose 129 



Old rose 129 



Old apple 129 



Apple hairy-root 129 



New apple 1-9 



Alfalfa r 129 



Grape 130 



New chestnut 1«50 



Arbutus unedo I'^O 



Cotton 130 



Quince 130 



Sugar beet 131 



Willow from South Africa 131 



Poplar (Flats) 131 



Poplar (Newport) 131 



Turnip No. 1 132 



Turnip No. 2 132 



Salsify 132 



Parsnip 132 



Tabulated results of inoculations 133 



Cultural characters I'^O 



Explanatory statement I'^O 



Growth on agar I'^O 



Growth in + 15 beef bouillon with 1 per cent Witte's peptone 141 



Cane-sugar peptone water 141 



Maltose peptone water 142 



Acid and alkaline bouillon— Table IV and Table V 143, 144 



Bouillon with sodium chloride— Table VI 144 



Cohn's solution— Table VII -, 145 



Starch jelly— Table VIII 146 



Indol reaction— Table IX. 147 



Reduction of nitrates • 148 



Preliminary statement 148 



Daisy 148 



Peach 148 



Hop 149 



Rose 149 



Apple 150 



Apple hairy-root 150 



Alfalfa 150 



Grape 150 



Old chestnut 151 



Arbutus 151 



Beet 151 



Cotton 151 



213 



