20, 3 . Lee: Citrus Tissues and Citrus Canker 833 
: 
TABLE 2.—Results of inoculation with Pseudomonas citri by twenty needle 
punctures on Valencia orange fruits of various degrees of maturity, 
as measured by their size. 
[Date of inoculation June 4, 1918; date of observation June ‘22, 1918.] 
Fruit. Results; infections. 
Not at 
“aap SE Ble Condition. goes pune- 
mm Per cent. | Number. 
Bea a SPIRE IES tr ROPMEE PE ONT sh 90 10 
- Skeet + ees 100 rs ee 
 paeeeaes Maso pdafucbapescdoes Myukc neuen ert ea eae. oa eee 100 40 
4 48 es I AAA, TEAM are Fa 45 30 
5 50 Approaching maturity ._._..._____- 55 0 
_ ree 1 Eas EIS OG okeare cate ceding ieee ene 0 1 
Wieucs: ot Seopa SAE Se ey ee aOR ery a Py Par Nie gee a EMER, See Sa 0 0 
Bowes, cg BERGEN Ee Ee DG edocs aa heck conan ek ede eww be ee 0 0 
, |. Ray Dade cage DG Sea waiasiceue ace cade eat ae ae ae 0 0 
p | Soa Pe, BSE do Suiucheg <p psctaalinpcascGlesawl esc oece, 0 0 
TABLE 3.—Results of inoculation with Pseudomonas citri on Washington 
navel orange fruits of various degrees of maturity. 
Fruit. Wests Infections. 
pune- 
No. Age.s en eat we comase, Not at punctures. 
Days. mm. | Per cent. Number. 
| Sarma ena SE ur Saag ot Oe 2 8.0 |B Ee ey ganas Fruit dropped. 
rR eates tir agai ee atop eg IRE 2 6.5 Cie Do. 
Mado oostn oe. eg haa 2 9.6 Oil iscenantes Do. 
wee Oe aa api eae 2 8.0 I EE ETE Do. 
rea i ulti Pepe ke gece eh g 8.0 “1 5 PR eirs Mass of cankers. 
Wee at Secs Ne 2 11.0 Di ccdnbecne Fruit dropped. 
Wausocuadsesie Gig g 8.0 ig FRR Mass of cankers. 
ae a 2 8.0 Lp Bap Re Fruit dropped. 
| pais nae seRbar sna apni Alora wor ox? Sti 2 6.5 Lb een Do. 
i ee 2 8.0 go eos oe Do. 
ll 2 9.5 Ie ine ronee Do. 
Ws lénkacne ence ee 2 11.0 10 100 | 160+ 
| eee tee 2 8.0 8 ie REE Fruit dropped. 
Ue ge ee cee 2 11.0 50 toasted ns) Do. 
15. seu 2 8.0 pg eee ea Do. 
20 MeL eee 2 8.0 WiSe2ss Do. — 
Wage ee E eos 2 8.0 he bee eaprentece| Do. 
RUE yells eM Se OEMS APL AO Bee a 2 8.0 10 100 | Mass of cankers. 
OO Se ctecube Sie ee 4 6.5 A csuakuced Fruit dropped. 
20 - wale 2 6.5 pT Bebe praca Do. 
21 16 16.0 Oi Do. 
alee ene ELIT ay ORE et 15 11.0 CL Do. 
* It is difficult to determine practically the period at which the ovary of the flower becomes 
a fruit; in this case, fruits 1 to 20 were inoculated but one or two days after the petals had 
dropped. 
