40 
Research Bulletin No. p 
TABLE \ 111— Continued 
FUSARIUM FUSARIUM 
TRICHOTHECTQTDES OXYSPORU M 
( 12 days 12 days 
Palmitic acid I 
" II 
" III 
" IV 
+ 5 cc. 10 per cent dextrose, V 
Stearic acid, I 
" II 
" III 
" IV 
+ 5 cc. 10 per cent dextrose, V 
Oleic acid, I 
" II 
" III 
" IV 
+ 5 cc. 10 per cent dextrose, V 
Palm oil, I 
" " II 
" " III 
" IV 
+ 5 cc. 10 per cent dextrose, V 
Olive oil, I 
" " II 
" " III 
" " IV 
A marked difference was found in the ability of the two organ- 
isms to tise the fatty acids, F. tvichothecioides being much more 
restricted in its ability. The experiments with alcohol and the 
acids also showed that the former organism was much more readily 
poisoned and inhibited in its growth. It was found that F. ox\- 
sponnn grew well in 1 per cent ethyl alcohol, and that F. tricliotheci- 
oides made no growth. The solution was then diluted one-half, 
whereupon F. tricJiotliccioidcs made a good growth. This was 
clearl}- a case of inhibition. The growth of F. tvichothecioides was 
inhibited by X/100 acetic acid, as can be seen by the fact that it 
grew in X/123 concentration and that it grew in N /100 when glu- 
cose was added, while F. oxysponim grew well in N/100 acetic acid. 
N 100 formic acid was toxic to F. tvichothecioides, while it merely 
mhiljited growth with the other organisms. The latter s^i-ew in 
X 125 formic acid, while F. tvichothecioides did not s^row in N ^^00 
solution. N/100 proprionic acid was toxic to both, while both 
No growth Good growth 
Slight 
Excellent 
Slight 
No 
Excellent 
No 
Poor 
Slight 
No " i No 
Fair " ' Fair 
