[ VoL. 3 
36 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
however, they were placed under a glass, such as is used in a 
forcing-bed, thereby giving a higher temperature than could 
be attained in the open house. On January 14 the plants in 
one pot of inoculated soil showed the characteristic symp- 
toms, and on July 10 the plants in a second pot had suc- 
cumbed. On July 12 a third pot contained plants showing the 
disease. Damping off due to Rhizoctonia interfered with the 
value of this trial. Тһе diseased plants were plated out on 
potato hard agar in all cases, and the typical Fusarium found 
to be present. As will be noted, it was only after the tem- 
perature of the pots had been raised that there was any ос- 
currence of the disease. Curves showing the temperature 
attained by placing the plants under the glass are given in 
fig. 6 
Ma 
4. ae з 
гот " ши ТТ 
ТЕБЕН a А 
CEO BRSRRRS 
ЕЕЕ 
ie ake и wi s ming; Li 
ининин най E m a ak Li 
Y таяз итиини и! 11 
* МЕНН ШЕН 
a г. am aE 
EST 
SE CTIE? ] ай coos 
5 tN | uu HHTH 
Wei П BEENS. 2i LEIT Li Li ІП ALI Li 
+ L: LLLELLET  завшиша! I1 Li Іп ПІ! Li 
Ka Li а жи ята и: Oh е! 14 LI LEI ІТ! Li 
9; Li TILLLLEI LELLLILII li 4 Lii Lil Li 
Li LELLLLEI TELI ial Li Іп LK LI 
e u =" ВАН = EECH 
здү шин ТИ ГІ CHAT 
En L Sp H М = +44 
9; Т EI) HI 
о Li пеи р IIT II LLLLLIKI CEEE Li 
L1 LILLLLEL ELL? 11 шишиши 1411 {1 
Ew LI вишна! EET EI li ELLE) LLLI Ы 
© LI CSL «куш, LI LLLLLLEI LETE L: 
Y Tt massa. LLLLILLILLI LI п LLI Li 
су Li шааж а: ТТ LI LLLLLLT I LILI Li 
b: 
Fig. 6. iagram showing temperature under glass in 
кы. ina pod inoculation experiments, Мау 5- 
1914. 
On May 10, 1913, another inoculation experiment was started 
with seedlings grown in normal greenhouse soil. The plants 
used were about ten days old — just showing the first true 
leaf. Five pots of soil were used, five seedlings in each pot. 
Pot 1 was left as a control, while the roots of the plants in the 
other pots were dipped into a suspension of spores from a pure 
culture and immediately planted. On May 13 they had all 
recovered from the effects of transplanting and were in good 
