626 



BACTERIAL DISEASES OF PLANTS 



TABLE I 



Showing result op wounding undeveloped leaf blades of Begonia phyll- 

 omaniaca. Knife wounds made March 30, 1918. Examinations made 

 after a month 



Plants and 

 branches 

 of plants 



69 unwounded vs. 

 13 wounded leaves 



Average 

 number of 



shoots per -'^^<r'^B« 

 «n in nn number of 

 un^ound^d shoots per 



leaf blades 



Total 



surface, 



784 sq. in. 



Average 



sq. in. on 

 wounded 

 leaf blades 



Contrasts on wounded leave 



Wounded parts 



Total 

 Fraction "'^'"f^^'' 

 of sur- . °' . 



umn) 



Shoots 

 per each 

 % sq. in. 



of 

 wounded 



surface 



Unwounded parts 



Shoots 



per 

 each 

 Hsq. 



in. 



Total 

 sur- 

 face 



Total 



shoots 



Average 

 number of 

 shoots on 

 any equal 

 fraction 

 (For comp. 

 with col- 

 umns 4 

 and 5) 



Ii 2.0 



I2 0.6' 



III lower leaf .... 



Ill upper leaf I 1 .0 



112 1.6 



nil 2.0 



III2 1.5 



III3 0.5 



IVi , 1.15 



IV2 (dwarf j 



shoot) 0.0 



Vi lower leaf. 1.3 



Vi upper leaf .1 .... 



V2 0.33 



Av. 5 plants 



(11 branches) 1 .2 



17.3 

 19.0 

 9.8 

 11.6 

 20.6 

 21 

 19 

 36.0 

 15.0 



0.27 

 6.7 

 14.0 

 8.0 



15.2 



K2 

 Ho 

 H* 



Hs 

 Ml 

 H9 

 J22 



He 



215 

 183 

 71 

 117 

 238 

 141 

 246 

 267 

 241 



46 

 145 



58 



0.07 



0.125 



0.5 



0.09 



0.2 



0.18 



0.3 



0.0 

 0.4 

 0.24 

 0.04 



IM2 

 ^%o 



^H6 

 «%9 



4.0 



0.2 



1.6 



1.3 



5.0 



0.3 



1.1 



0.55 



1.5 



0.0 

 0.6 

 1.5 

 0.07 



1.4 



1 There was also a leaf (I3) which received eleven wounds, but the total wounded surface was 

 not recorded. This was on a dwarfed shoot from the axil of the branch I2 and there were no shoots 

 either from the wounded or unwounded parts. 



