86 THE CROWN-GALL AND HAIRY-ROOT OF THE APPLE TREE. 
umns the results of the first four columns are combined; and in the 
last column is given the total number of trees of each variety grown 
in five years. 
TABLE XXII.—Results of experiments showing the variation in susceptibility to disease 
of scions from different localities. 
VARIETY, WOLF RIVER. EXPERIMENT CONDUCTED IN EASTERN KANSAS. 
Num- Trees in experiment. 
ber of : 
nurs. Location. 
ery. Number. | Diseased.) Galled. | Hairy. 
SS ee eS Eee | ESS ee 
Per cent. | Per cent. | Per cent. 
40.2 20. 
DA NOW aise Sis Ris sere Sie on neon See eee 244 : 20.1 
Sb ae (0 0 aes Seep eee ye e eg en) enim i A. ae a oe 50 38.0 14.0 24.0 
QO: MASS Url Se ee eee eee at! ame Dan aoe 250 36. 4 ee 19.2 
By (aes (6 V0 eres Aero IAN a ap eee ee ML Lm os aR ATT Agee 189 33.3 14.8 18.5 
63/2 C6 Coe een eee Shes teh een Se eRe Se re Ne ee 175 30.8 11.4 19.4 
Bh OW Be Fo Se erro eee ce tes Ee 280 30.3 10.7 19.6 
5:4] 4 Caltiorniae ate has eae See ee ee nee ieee es ao ee 190 26.8 8.9 17.9 
40 Michigan sass sccteam meaner eee Scie ee Saat e 250 26. 4 8.0 18.4 
Te) CIOS ase Ses ere a aE Se Ie Sa ue 327 22.9 6.4 1635 
121 IMEISS OUT Sa a 5 ae ates nn ped cere op 345 29.6 18.8 10. 
USN eRANSAGH 2 SER sre hep itn teen ep ee eet py eee 800 25.0 20.1 4. 
i Wea id Wy eee eee es Ob i ee cage A an Se ROR i ea ca 300 23.0 17.6 iy. 
LO: (Californias se x Sees Sat ser ap aay ee en 90 2290 16.7 5, 
SF | MEISSOUTIE S325 eee SS, a aah es he ees er 200 21.0 13.0 8. 
Oca CLO eae ey ERIE GC ares PN Sete I a eee 85 20.0 14.1 5. 
| ORIG s ooo eee ee eee te: Se eee eee eine 377 19.4 14.3 De 
DENT OW a ea ee ese eee a rae 190 14.2 7.9 6. 
4) Michigan Se. oc fact Seco Biss eee nee en ae 315 12.1 8.0 4, 
VARIETY, YELLOW TRANSPARENT. EXPERIMENT CONDUCTED IN EASTERN 
NEBRASKA. 
DOW Bees se ee ee ie a ines eee Ee 309 19.1 2.8 9.1 
3h] AMEISSOU TE =o es oe a Se 200 10.0 5.0 5.0 
7 Mpa Gc) ou te2) oes eee eR 7 eee eee ok ae le eadas 460 8.7 Sao Dad, 
Dy) MO WD oie aie renee hee, ees ge mae ee koe Vga emp ea 190 7.9 3) 4.7 
6: | IMISSOUTTS tees 2 ee a ee Senate omer a ee eer 177 Use EY / 5.6 
5: | California. eee Sete ea ie eg ee ee 335 6.3 1.8 4.5 
TaBLeE XXIII.—Results of experiments showing the comparative communicability of 
forms of crown-gall and hairy-root. 
Seedlings in experiment. 
Treatment of seedlings. 
Number. Galled. |- Hairy. 
Per cent. Per cent. 
1, Control Cut). <5 int Rene ee ef ee Eee 1,44 0.8 6.6 
2-Controlchipiinserted as. seer or. eee eee ee eee 1,426 ile Uh 8.4 
3, Piece ‘ot:soft gallinserted 22 Sener ne ee ee ee eee 1, 382 8.7 1.2 
4-Pieceof hardigallinserted Sages ete ote eee ee 1,324 1.6 6.5 
5, Piece from hairy-root seedling inserted......................----- 1,330 3.1 6, 2 
186 
Re wr Oo © Ore © 00 
