HEART-ROT 109 
Not Auto- Dry 
Soil. sterilized. claved. sterilized. 
(a) From pot in which young 
larch had been grown: 
sandy loam: slightly — good growth _— 
acid: humus and nume- 
rous dead roots of larch 
(6) Sand with oak humus: 
no lime: markedly acid : + 
deep black colour 
(c) Beech humus: little lime: 
some roots : brown} 
colour 
(ad) Soil from beneath spruce 
containing needles and 
roots: much lime: brown 
La ” 
_ fair growth _ 
colour 
(e) Clay with flints, from 
above chalk: beech _ % % — 
humus 
(f) bier pamnae lightarable no growth | good growth nee: 
a oe a eo oe fair growth slight om 
grow 
(4) Sycamore humus 53 a good growth fair 
(&) Sandy loam from Douglas growth 
plantation which had a 
been attacked by Fomes{ | ” a fan gecrertli 22 ” 
annosus 
(1) Same wood as (k), but 
where Douglas was} | >> a very poor no growth 
healthy growth 
(m) Same wood as (i), but) 
another part \ 
(x) From larch and _ beech 
wood near a fructifica- 
tion of Fomes annosus:{ | ” ” good growth poor 
loam above chalk 
(0) From near te at- 
tacked by Polyporus ‘ ; 
Schweinitzit: oak above : fair growth pe a 
loam above chalk 8 
(p) From near spruce killed 
by Polyporus Schweinit- 
zi: very open wood: 
loam above chalk 
fair growth 7 ae 
”? 29 
good growth no growth 
The test for the growth of Fomes annosus in each case 
was the appearance of conidiophores, and if these were not 
