EFFECT OF KILN DRYING, ETC., ON FUNGI IN WOOD. 13 
TABLE 1.—Effect of various heat treatments, etc.—Continued. 
Run No. 
L | 2 avP 46 7 8 9 10 | 11 | 12 
ae har aed bas dare in 130 3 145°| 150°|170° 
ci x, 120 F | 140° F 2 
Fungus or rot and host. Size of test | fia } 'B ey Be B : . 
piece (inches)./o. lo g3/% uly ile 4 
aS em s| ein 3 | Oey Ltlkn Gee 
Ssleq|Sal8al\Salela4 4/2 gle] ale) atel 2/2] 2 | le] 
ke eee ESE elle SlSelEeel e IElEl a 
S28 = FF lelalsiaislelalolaiS\s| « lal S 
Polystictus hirsutus in 
Picea canadensis --___- 2D AO Dy*48" [fe | S| A ee ee “fy a Ney rd al ed pi ne ee al fem He | ll 
Rolysiienusi. Mrsutust| © by 4 Dy 2h | Det DID | De Doe lela eet D: IDIDI Dp 
and P. versicolor ins} 2by4by 24} D)Dj}D{D}D j__|__|--}_-]--|__|--|__|__|__-|__|__| D |DiD| D 
Alnus oregona______- Ap yA by 2Aa) Dale De Do Doi Pee eae ale SSS PAD Ya Oy) ei D 
Bit ; L by 4tby244-.2.|._ D|D|D{LIDIDID|DI|__.D|L|D|D|D|D] D |D/D| D 
Co ee any aby 2 D1D|D {tip pip |. DIL\p DIDIp| D [DD] D 
g ----|| 4by 4 by 24 |.___|___- D|D]DI{ILILID|ID|D|__|D/L|D|D|D|D} D |D|D] D 
Trametes pini in Picea 
canadensis_-_________- Di VelOW WAS) 2 | PE Soh ee eee Pa al oe fe the | dT SS ap Ete 
awe {| lby 4 by 24 |.___|___- D|D]|D{|DID|DID|D|__|DID|D|DID|D] D [DID] D 
oper 2 by 4 by 24 |.___|___- D|D| D|LIL/LIp/p|D DID D|DIDID] D |D.Dj D 
pare 4by 4by 24|___|.__|D]D]|L Ag ele ap D ie D 
A ete lby4by 24] D]_._.|D|D|D Clitsbolab lalblolahss D |D|D| D 
Spee pinay eps 2by 4 by 24| D |__| D|D| DILIL/D|IDD|__D/D|D/D|D|D} D |D/D| D 
sense tae == | 4by4by 24] D{|-__|D]D]|D EE APP BP IP.S PP ae 
eee Gene Hib ye6. py 24a (See eS 1B Mit Pa AVY Fs 09) ee De) De ny Pe | Ee 
dotsuga’> taxifoliaz.-\| 8 by 8 by 24 |) -_ |---| 1) bes =| ed We mee soil (0 nea basal (ut pil 422) bs al LE 
: é 1 by 4 by 24 |____|___- D|D|D JDIDI__|D|DI__'D|D|D|D|D|D] D |D/D] D 
Beye cepical rot il 2by4by 24 |_| D} DI] DInIDIL_IpDID__ DijDID D|D|D} D [D'D; D 
aa sobee 4 by 4 by 24 |.___|____| D | D}] D [LID|__|D/D|__|\D|D|D|D|D|D| D ep D 
. , lby 4 by 24 |-.__|___- D|D|D Le G8 2 NG aia D |D'D] D 
Scien ea 2by 4 by 24 |__|... D|D1|D {|tlp__DID_ DIpIpD D|DID] D [DID] D 
--(| 4by 4 by 24 |__| D|DID Galas ide alstels D DD D 
Bs i! _ (| 1by4 by 24 |__| D |p |____|ulL'pD'pIpI__|__lpIpIp/pIp] p |pIpI___- 
PEs oe aoe i 2 by 4 by 24 ||. D | D [LL /D DiDI__|_/D/D D/pIp| D Da m5 
ll Sby 4 by 240 D | D [____[L/L/LIDIDI__|__[D|D|D|DID] D ant ee 
ee : 1 by 4 by 24 |____|___- D|D too blp'pl.|Iplllobol.. plo... 
Depma Tingiret Jn) 2by4by 4 || | DY] D {--__|LILIDIDIDI__|-_|DID|D|D|D]____/D|D]___- 
--|| 4 by 4 by 24 eaapee- D|D =|L L|D|D)DI--|-- L|D/Djp D)---|D|D/-.-. 
Minor preliminary tests were included under run No. 5, a, b, ¢, 
and d. The test given in 5,a, indicates that the steaming process, 
where pressure is used for short periods of time, is effective in 
killing the blue-stain fungus, at least in 1-inch stock. The steriliz- 
ing effect of the ordinary method of oven drying blocks of wood 
is given under 5,b, and the data on the failure of a particular pre- 
servative treatment in sterilizing the center of 8-inch ties infected 
with a heart rot is given under 5,c. It was noted that in the areas 
where the creosote had penetrated the infected wood the fungus no 
longer revived when cultured, but revived in cultures made by using 
fragments taken from the untreated portions near the center of the 
ties. From the face of the tie to a point 2 inches in from the face 
no positive cultures were obtained from the infected area; beyond 
this point and toward the center, positive cultures were obtained. 
The heat apparently was effective in sterilizing to a depth of 2 
inches. Under 5,d, it was found that a steaming treatment of two 
