CONTENTS. 7 



Studies detailed in this bulletin — Continued. 



Conflrmatory inoculations and cross-inoculations — Continued. 



Exi)eriments with schizomycetes from galls on other plants — Cont'd. Page. 



Additional experiments with sugar beets 81 



Isolation of organisms 81 



Reinelt's experiment 84 



Other attempts at isolation 84 



Hop on daisy 85 



Hop on tomato 87 



Hop on olive 88 



Hop on cotton 88 



Hop on grape 88 



Hop on almond 89 



Hop on peonia 89 



Hop on sugar beet 89 



Hop on hop 90 



Chestnut on daisy 90 



Chestnut on grape 91 



Chestnut on sugar beet 91 



Poplar on oleander 91 



Poplar on Opuntia 92 



Poplar on cotton 92 



Poplar on grape 92 



Poplar on apple 93 



Poplar on Brassica 93 



Poplar on sugar beet 93 



Poplar on calla 94 



Willow on daisy 94 



Willow on willow 94 



Relation of so-called hard -gall of apple to soft-gall 95 



Both kinds of crown-gall due to bacteria 95 



Apple-gall (hard and soft) on various plants 95 



Preliminary isolations and inoculations of 1908 95 



Hard-gall of apple on daisy 96 



Hard-gall of apple on tomato 97 



Hard-gall of apple on Pelargonium 98 



Hard -gall of apple on apple 98 



Hard gall of apple on sugar beet 99 



Hard-gall of apple on Monstera 100 



Relation of crown-gall to hairy-root 100 



Hairy-root of apple due to bacteria 100 



Experiments to determine where the organism is located 101 



Hairy-root on daisy 101 



Hairy-root on tomato 102 



Hairy-root on young apple trees 103 



Hairy -root on quince trees 103 



Hairy-root on sugar beet 103 



Miscellaneous 105 



Description of Bacterium tumefaciens from daisy 105 



Morphological characters 105 



Vegetative cells 105 



Endospores lOG 



Flagella ' 106 



213 



