204 STATE HORTICULTURAL SOCIETY. 



Yellows— Continued. Page. 



Injuries not the cause of . - - - 183 



Inoculations ... - --- — - 169 



Parts first affected 166, 175 



Period of incubation in - 191 



Keference to losses occasioned by 165 r 168, 170, 176, 178, 179, 188, 189, 191 



Severe winters do not cause 187 



Slow progress of , in affected trees. 168,170,173, 175,186 



Small amount of diseased material necessary to produce 170,173,191 



Symptoms of (see also Excisions).. -- 166 



8ymptomsof, in early spring 168, 192 



Trees affected before symptoms appear 172, 192 



Trees seldom or never recover ^ 168 



Virulent nature of 170, 172 



Where native -- 165 



