1917] 
DUGGAR—FUNGI IN PLANT DECOCTIONS 283 
demonstrates a fairly close agreement with the curves for 
salmon solutions. 
It is interesting to note that while Aspergillus makes a 
heavier growth 1 in decoctions plus sugar and mineral nutrients 
(except in the case of apple) than in the Richards’ solution 
„й 
mee” 4 
+ РО, 
8. Dee. ES хо + РО, 
1. Decoction 
2. Dec. + sug. 
3. Dec. + sug. + NOg 
4. Dec. + NOs 
5. Dec. + sug. + PO, 
6. Dec. + РО, 
ба. Dec. + РО, 
7. Dee. + sug. + NOg 
9. 4 dec. + 3 Rich. sol. 
10. 4 decoction 
11. 4 Richards’ sol. 
12. Richards’ sol 
Fi Growth of Aspergillus and Gloeosporium on apple ose ag 
and other nutrients; Aspergillus, solid line; Gloeosporium, broken lin 
containing the same amount of sugar, still the differences are 
scarcely as great as might be expected, taking into considera- 
tion the fact that the decoction is a complex food solution. 
That the solution containing apple decoction, sugar, eto., 
yields less growth than the Richards’ solution is noteworthy. 
With Gloeosporium obviously the Richards’ solution is not 
as satisfactory as the decoction-containing solutions, but as 
yet there is no evidence as to the nature of the nutrients lack- 
ing in the former. 
In table пт ash solutions of several decoctions are men- 
tioned. These were prepared by drying down 25 cc. (for two 
cultures) of each decoction, then carefully incinerating. This 
