128 MISS 8. LONGMAN ON THE DRY-ROT OF POTATOES. 
TABLE II. 
Efect of Temperature on Cultures of Fusarium in dry, moist, 
and wet states. 
(+) = Culture not killed. (—) = Culture killed. 
Cultures heated gradually | 
during 1 day up to | 
(Dry .... | (+) (+) (+) (+) 
Wet 
Cultures heated intermittently 50° 54.50 o .Бо 
for 186 and 3rd days up to | 50°С 5 me 60° С. | B45" C. 
ay | | | 
Сту... .. | (+) | (+) .. (+) (+) 
| А 
State of cultured Moist ..|  .. | (=) ©) (—) 
| | 
| | 
Wet...) o. | (—) | (—) (—) 
— — RS 5 — | — - T 
Cultures heated for 10 hrs. | 455 С | 50 C 54:59 С | 60°6 |8450 C 
at temp. ........ { | ' TI" | | | | 
(Dry....| (+) (+) (+) | (+) (+) 
State of culture Moist ..| (+) (—) (—) | (—) 
| | 
| NNNM | 
| | | 
Wet (D | C) | ©) С) 
SUMMARY. 
l. Fusarium Solani is a true parasite capable of destroying the tuber of the 
potato and also of killing the aerial shoots. 
2. The fungus has a reduced pyenidial stage, but Massee’s ascus-stage has 
not been met with. 
