68 
TABLE II. 
Germination of Oat Seed and Smut Spores After Immersion in Hot Water. 
ma |i, 
=  |p.ee 
& BCBS] ak 
we | 3S [See] See 
Temperature of Water. ok 2 |, on.8| aoe 
fee Go |}ong ass 
~~ ag 2H |Oon!l Sag 
a 5 82/859] 0 he 
ise ee Str aoe 
(O16) 11 3)00) BRR a rate arate COmmee rear inert ote Sab ence Cabin ermine neta liso camber 14 14 99.5 
LBV ehS) Ere gee See, IN Neen RS Se ir eee Mee BrP eit ert 5 min 2 2k) (aera 
TOS Be 84 eek Pein ake studs SOR aa eee a  Peeeetomente 10 min 2 2. | Ges, 
1) Td ee PPaRIeR haiti SaD Batic ME CRIE a Sra tind Moros Soc arora 5 min 2 2». sere anes 
DESO SN, ona Jets hana < See ak teen aa eee geass OE aa te 10 min=...|) 2 2), Ine 
TAN aH Seve: coat 5 ac, cope es Reed eae wae LW et te IL sodas ST Beeld ORIN Ae 4 Stee 
12D Piss ee PRA Cree OCR Dee aD ER NOD DECL Pee cence 10 min.... 4 0:0 | ever 
1 SIS anne Sere Ne Seas Ss AEE 9 See SEE Sowa ee AER MNS SBE roe rir Eri belcgae it 0 93.5 
{PT eee ae Sa e eee ee 7 eee daly Se Sod Oe pe ROT ne Pant ne 10 min,:..| 2 0 945 
TSOP AB aac. t Cada sracts on ed eearah comes Pee iu eyo tas onc hoe es ae. Se DIMENase 1 0 90.5 
16 2a Pe Verse rae ear OP reine nono nates ieee pi oan ae 10 min.... 1 0 88 
DOO rcs reaches obs Shisie Aid cho oa eee RnR Cone aniseed s 4] GO MINT geal 0 95 
IRQS re alee hae Sf < Bal seas ty’. abs’. Cb daeeae oot oenEn canoe LOmimen ge | 0 93 
aS er ea Se ise, Nes Vain’ x Rep ax, oat ee hei ab eER Rech MIME EN ok ECE 5 min.. 1 0 53 
AOR URE aie oa Bar Ay iy ents Be sat ALL RES Oars ream a eee ee te 10 min.... 1 0 42.5 
In Table II. is presented the result of the hot water treatment, the 
range of temperature being from 110°—140° F. The lowest point of effec- 
tiveness was found to be 120° F. for ten minutes. This is a point at least 
ten degrees below the effective point of treatment of the grain for the 
prevention of smut®. The grain itself showed little injury from treat- 
ment at an increased temperature of fifteen degrees over the effective point 
for smut. The inference to be deduced from this fact is that in the hot 
water treatment there is quite a marked range in temperature between 
the limit of spore resistance and that of the resistance of the grain. ‘The 
effectiveness of the treatment between these two limits would seem to de- 
pend wholly upon the ability of the operator to bring each seed in contact 
3 Arthur, Ind. Agr. Exp. Bull., 35: 86, 1891. 
