1*2 A (jrH-iilf u r(tl Kxjferuueiit Station Research BnTtctui H 
lu‘cniisi‘ of its r.^hitioiishi}) to tlio wilt of cotton and waternielon. 
whore this syinptoiii is vavy prominent, and it seemed desirable to 
retain it for the coAvpea disease.” 
In the case of the so}’^ bean disease, wilting is a less prominent 
syni])tom than in cowpeas, and is seldom present at any stage of 
the disease. The plants, as a ride, drop all of their leaves and die 
Avithont any evidence of Avilting. AVilting has been obserA'ed 
in a A’ery feAv instances in the field in the case of young plants. 
The Avoody nature of the stem and petioles probabW accounts 
for the general absence of Avilting in them, and the presence of 
Avell-deAxdoped mechanical tissues in the leaflets may account for 
their failure to manifest Avilt. The possibility exists, also, that the 
physiological interaction of parasite and host dili'ers from that 
exhibited by Avilted cotton and Avatermelons infected Avith 
Fumviinn spp. If potted soy beans Avhich have never been ex- 
cessiAxdy Avatered are alloAVed to remain Avithout water they do 
not Avilt l)ut the leaves finally curl as the tissue becomes dry and 
crisj). Neither do the leaAxs Avilt if the stem is cut to the center. 
l-'iR. y I). Soy bean |>lants Rrown out of <loors in the same type ((*ccil) .saiuJy loam 
,ioil; I), healthy : 1C, diseased thru the naturally infested soil. 
