12 College of Forestry 
The fungus — (Continued) : PAGE 
Reaction of the sporophores to external stimuli................. 82 
Relation so waters cep ne cee vee: cere ee thee 82 
Relation: to ‘grawityenc sce: acd cele mcs 2G de eels ee 85 
Relation towight,.n. 02 set ewan. oe 2 ose 86 
Relation: to) chemotropismis scien selene ec ee eee 88 
Regeneration of lost parts of sporophores.................. 89 
The destruction of wood by Polyporus pargamenus............++.0-- 89 
Chemistry and physics,of the decay....-.2.<<:..-+.. 5. + -s eee 89 
The decayaot syellowsbirchwoods.... 455-12 + .-)ner kit eee 91 
Stimicture of normal wood... i... ca02.2%.2. «45 = oe 91 
Microchemical reactions of normal wood.................. 93 
Macroscopic appearance of decayed wood................. 95 
Microscopic characters of decayed wood..........:........ 98 
Mherdecay:ot-sucananaple wood... a2 se see eee eee 102 
Styucthureror normal woods. =. ces 0.3.30 4 eee 102 
Microchemical reactions of normal wood.................. 103 
Macroscopic appearance of decayed wood...............-. 104 
Microscopic characters of decayed wood................... 106 
Thedecay of-bittcrhut hickory wood.......4.02.- a.) 62 een 107 
Structure of normal-wood..00. 7! 2.02. : eet >: os eee 107 
Microchemical reactions of normal wood.................. 110 
Macroscopic appearance of decayed wood................. 111 
Microscopic characters of decayed wood................... 111 
Mhewdecaysol chestimmonks wOOdns mae see rieceie ee acre trentenne 114 
Structure of morimalswoods+ ssn. ee eeekeeee ae cee eee 114 
Microchemical reactions of normal wood.................. iUiLi/ 
Macroscopic appearance of decayed wood.................. 119 
Microscopic charatters of decayed wood.....:............. 120 
The decay of hemlock wood: ..). ce 4 Sv vase. 7 acs oe ee ee 122 
Siructure of normal wood: < :2\0-h.ts2: .... -agtae > Cen 122 
Microchemical reactions of normal wood.................. 123 
Macroscopic appearance of decayed wood................. 124 
Comparison of the decay of hemlock wood by Polyporus 
porgamenus and P, QbveHi NUS... 2. «ns. en oe ee 127 
Microscopic characters of decayed wood.................+.- 127 
Mherdecayaol otherswoodsere saci ce hess =. ose eee 131 
Summary of the physical and chemical changes in decayed 
WiOOGs easter cnd DERE R eRe eines trsbe te che ine io eee an 132 
Macroscopic characters..6 oy 0.32 ovens ale es cs a oe 132 
Microscopic characters.............. © og agate Rats eee 135 
ocalizationrol therdecayncssseisemicmece ene noe Cee eee 140 
