THE WILT DISEASE OF PIGEON-PEA. 49 
1. Standard solution + glucose.—After a week the growth in 
this flask was ahead of that in any other of the series. The surface 
growth was dense and of a moist pink appearance from spore produc- 
tion. The deep growth entirely filled the solution. After 15 days 
this was still the best flask, the submerged growth being very dense. 
Neither in this nor in any other of the liquid media was there any 
appreciable aerial growth. After two months the surface colour had 
faded to a dirty flesh colour with some creamy patches. All three 
spore forms were produced. 
2. Standard solution+ Saccharose—The growth was slower 
than with glucose, the surface growth after 15 days being only about 
one-half that of the latter. After two months the colour was a 
deep pink, much brighter than in 1. All three spore forms were 
produced. 
3. Standard solution + maltose—The growth was patchy at 
the surface though dense below after a week. The surface patches 
were salmon pink from spore formation. The latter had increased 
by the 15th day but still did not cover the whole surface as in 1 and 
2. In two months the colour was intermediate between | and 2, 
but the growth still less than in either. All three spore forms 
were produced. 
4. Standard solution + glycerine—Growth fairly dense after a 
week but no colour. In 15 days the superficial growth was grey- 
ish white. In two months a little colour had appeared, and this 
gradually developed into a uniform pale creamy pink which per- 
sisted for many months. All three spore forms were produced. 
5. Standard solution+qum acacia.— Growth of the same 
character as in glycerine but denser and the pink tinge appeared in 
15 days, and was about No. 16 of Saccardo’s “‘ Chromotaxia’’ after 
wo months. Macroconidia not developed. 
6. Standard solution + peptone.—Surface growth slight, white. 
Submerged growth less than in any of the above, flocculent, not in 
sheets. No colour developed after many months. Few spores 
were formed and all of the microconidial type. 
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