CONTENTS 
PAGE 
OSES wei siererereva- anal ganas atic s pacadl oe davtacr ahuaseD ble ee Beles eee wade: 533 
Economic value of chestnut....... 0.00000 0cccce eee eee 535 
Soil requirements... 2.0.0... cece cee cee eee ee 536 
Natural reproduction..........0. 00000 cece cece cece eee cee eee. eee 
The disease 
Ascospores 
Mycelium 
PATH OREM CI Y iors scosiccarane teacane iecin ann atta Salsas dotad aga ideas nl hbk f dealt neh A shes 
; On. Casianed: dentaea s ccas cold 8s55 ais Oats aE RRS PRE OE EERE ESS 
On other species of Castanea... 10... . cece cent ees 
On trees outside the genus Castanea..................- Picts trie aoe gece 
Life history sos <c0usax case esa eh aeos ooo REE RUSE LER OSA eae Bowe oe 
Germination of pycnospores.... 0.0... 2 cee cece eee eens 
Germination of ascospores........ 0.00.0 cece cece eee eens 
Vitality and longevity of the spores.....................2000000. 
PY CMOSPOLES ericwise sesarisie cecavs:ispucbes he seat ans Bu neal at doy eee lnd wees ies 
INSCOSPOTES ie aoiisian ania ewiniee ss oss ane at enone eee 
TInoculation:.and. infections i: cccieics seep eaerians wee ees 
‘The inoculum «owes gine es oa be eu nue er eaihes. Valen cee aeD 
Necessity: of a. wottnd vies. os sc5.s0% 2s potter Ghee sameness 
Agents that produce the wounds............6 5.00 cece cena 
Age of tree and parts of host affected 
AL ECE: OF SEASON rence c sees acs seers oer ucteluiai acu oro Snare tee vans Dalb eem BUG 
Development of the canker...... 06... ccc eee 
Rate of growth of mycelium... 2.6... 06. c cece cece eens 
Vitality of myceliumis sce egies cassie eet eae adn aw ee 
Development of pycnidium............60 02s s eee eee eee eens 
Time of production of pycnospores........--. 0+ sere reese eee 
Development of perithecium....... ia 8 nt SE aaa a aay SEM A 
Time of development of perithecia... .......-...- eset ee eeee 
Ejection of ascospores. .... 6.60. e cee ene eee eee 
Saprophytic growth. ....... 0.0. c cece cece eee eee eee 
Dissemination... 5 -cie kere hut we ec ae Swe hw aad wade 6 Ciel ae alors 
