92 THE CROWN-GALL AND HAIRY-ROOT OF THE APPLE TREE. 
TaBLeE XLII.—Combined results for three years of experiments in wrapping root grafts. 
(Experiments 1 to 4.) 
Trees 1 year old. Trees 2 years old. Trees 3 years old. 
Kind of wrapping. 
Num- | Galled.| Hairy. | \“%"- | Galled.| Hairy. | NU" | Ganted.) Hairy. 
IPS OS IP, Gio IES Gb \ IPs Gi 125 Gin || LPs: Gl 
Clothe ase eae acc 705 9.8 4.4} 1,737 7.3 5.9 759 2.9 &, il 
Riu bers <3 esr cae seeee 693 8.9 3.9} 1,661 7.6 10.2 697 4.1 9.5 
Waxedipaperia ase -o eae 668 26. 0 5.0 | 1,550 9.3 11.0 666 5.4 11.4 
IPiainwbhinea dees eee seer 652 21.5 10.7 | 1,566 9.6 14.9 672 6.6 12.6 
Wiaxeduthned des se-erascae sce 682 30.3 8.0 | 1,662 14.6 13 705 9.5 11.6 
NOswiappineee-=-s.sseo eee 535 39.6 9.0 | 1,504 12.4 16.5 563 8.4 1329 
Wiaxe daumionees see sse ee eae 379 48.8 6.6 938 21.5 14.1 341 12.6 13.5 
TaBLeE XLIITI.—Final summary of results of experiments 1 to 4 in wrapping root 
grafts. 
Kind of wrappin Healthy | Galled Ped 
J) ee trees. trees. Tee q 
rees. 
Number. | Per cent. | Per cent. 
Cloth 22255: acscicsies Shears Hae SS oe Qo See BEE CORR ORG EAE SEO eE ER Ee rE 2, 814 6.8 5.3 
1 240] 0) 0X) eeeeeee ee ee eNe iene Geren NUS Ce eyes Re ie Ee oe as ube os ea oO 2,001 doll 8.6 
Wiese di papensan sis. 5 sect rel pe LOU yr oT See eels Oa Rp te on cee ee es 2, 251 12.3 9.7 | 
iWaxe dithrend taste sees pe Sha rs cen weap NG hoa CES de ee ea 2,178 16.9 ils | 
Plain Ghread sec. & Site es Sh a ge ee ea Re ia eee er nee ee 2,168 SG 13.4 
INVA A 12110) OVDON SA Rane ier ne ene wee ree os Ma a id eye eae easeaee 1,784 17.2 14.3 
WV COMER C Cait eens aren tee oe Se yet pe eRe cea ae Ss ee 1,025 26.0 1D 
A IO) 2h aie erie re Eee pe Fae he yaa etn Bat es Geta ied Maka g oat 14,791 
TaBLeE XLIV.—Results of experiments in washing apple scions and roots in a 2 per cent 
copper-sulphate solution. 
Trees grown from untreated | Trees grown from stock treated 
stock. with copper sulphate. 
Variety. 
Smooth. | Galled. | Hairy. | Smooth.| Galled. | Hairy. 
WVieall thi yssa see ie ee tee ee ieee ee 115 121 23 49 27 3 
INOLLherniS p ye Sais aes eee eee 57 8 9 33 1 4 
Gan. 5 ees ce Geek Rue Oe Ree ane 77 2 48 40 2 14 
HIRO Cal ees Sees ao ee a ciara nets a ce 249 131 80 122 30 21 
IDE EI COTE Re eet en ces nes aren gener ee Ee 54. 1 2555 17.8 70.5 17.4 12.1 
