186 
TREATMENT OF FuNGUS SPORES. 
Germina- 
. Remarks. 
ation. 
Name of spores. Treatment. 
Ustil via not treated ... | 24 hrs.... Seaar ben abundant. 
ieiaig piesa Aes Seeker }hr....| all killed | Spores bleached. Pro- 
ws eit contracted. 
(not treated .., | 24 brs....| Hemibasidium formed 
but not fre 
treated 3 hr. ... | 24 hrs.... “rr forward than un- 
Ustilago Vaillantii, Tul. eated lot. 
treated 2 hrs, | threedays Gare inetion feeble. 
ny killed. 
Man 
rs. | all mess 
2 
we. | all ‘hlled 
at pec +. | 24 hrs....|Germination very 
vigorous 
treated 1 hr.... all killed 
not treated .,. | 24 hrs....| Did not germinate in 
water, but freely in 
decoction of prune 
juice. 
Ses 
gg 
2g 
bee 
Ag & 
eae 
re 
Uromyces ficariae, DC. Germination abundant. 
Sclerotinia sclerotiorum, 
Mass. 
Aecidium vranunculace- 
arum, DC. 
| 
L 
need thr: oe. | all dll 
Leplasphaaria. aoumine ».. | two days | Vigorousgerm-tubefrom 
ata Faas: ; every cell of the spore. 
; treated 1 hr.... | all killed 
Erysiphé_granisis, DO. ae ss i sae Germination abundant. 
Macrosporium solani, f not treated ... | 24 hrs.... “co rampant in 
— treated 1 hr... all killed 
.. | 24 hrs....| The spores were 3 
Heterosporium echinu- months old. Germina- 
latum, Berk. tion vigorous. 
treated 1 hr.... | all killed 
not trea‘ed ... | 24 hrs ... | ) Germinationabundant, 
Cladusporium — epiphyl- } all put up in decoc- 
lum, Pers. 24 hrs.... tion of prune juice. 
ieated | = ‘br all killed 
{no two days | Germination vigoro 
After oe days, broken 
ee ae ver i sporo ores in 
a luteritium, | t wae bal nenueel 
vigorously and _ pro- 
duced chains of oidia. 
eta 1 hr.... | all killed 
SUMMARY, 
The spores of fungi, also some kinds of bacteria, are as a rule 
killed by an hour’s immersion in hydrogen peroxide ; no spores 
hours were pe from two to eight tren r in most ———— 
were killed outright. The period of retartation: is much less 
