394 BOTANICAL GAZETTE [ DECEMBER 
TABLE XVII 
STRENGTH REQUIRED TO PREVENT GERMINATION 
[Expressed as parts of normal solution ] 
Substance Botrytis Macrosporium| Gloeosporium | Penicillium _Uromyces 
ba wn 
at SEN a eas aes Be sae or 
i Wt nw at nw 
MAN 64.9 es. ot ae 100 100 
Hel seig:......... Ss = |S oe = 
50 100 xe) 5° 
w nw A n 
PGC 09-3405. 34. > es berger > os ae 
oS) 3 Me oP ere > > sn n > 5m 
nn A n n 
CuSO,+5H,O 247.54 sans Sis ses 3200 
Cu(NOs)a+3 H,0 fe 5 n a 
PAO Os ga Celie wis aoe Bs Sos 200 3200 
Cul nt n hd x 
u(C,H,0,). 179.96 oo as as ion 
CuCl ; oe ae “ 
uCl,+2H,O 166.96 3200 or less » 6400 acuta ae 
K,C ae sie - . 
2CrO, 192.92 < tic pe < 640 40 
K,C Oe. ce Bech “ 
2 T20, meee = 1280 1280 ae 1600 8 
NaCl S8.16.:.%..<.. > = >n >2n 2 
KOH 54.74... s : . 
54 74 ae > ts 40 > 100 
POH 38.96 25s : . ——— 
a 38.76 an — 40 ? aa 
NH NO. 90.52... ed - : 
2 2 
RE. 26096). i5. 6:5. : : : : 
ms: 4.7 >— |>> deme rs o 20 
© 3s.) 425... I Sort ~ = arare? 
, oa - 20 = 20 ¢ 9 “ 
Na(C,H,0,)+3 H,O n 
Lic) Vea ees = > > >n eee 
4 
MgSO,+7H,O 2457 >< 
BaCl,+2H,O 242.13 >— 
ED. tate is. > “4 
~ MgCl,+6H,O 201.88 se 
10 
K,Mn,0O, 313.94... am n poses 
200 
NH,OH © 34.82 2... ~ 
Be 25 
| tala 
case of Penicillium, which uniformly grew in ,%,. So the fact 
must be accepted that KCN has a low toxic power for these 
fungi. 
