48 BOTANICAL GAZETTE [JA 
the behavior of the hyphae as they grew downa towards 
extremities dd between the copper-containing portion 6’ 
the check preparation c’. The hyphae did curve towards 6’ aa 
c’, the more strongly they curved towards them. This 
took place even when @ ane 
©, (6) ¢ contained no nutrient su 
rol Ry stance, the hyphae grow 
_ “Met races hiales seems is be satisfactory, has failed 
oe that Rhopc has positive or negative chemotropism t 
be ee or allied metals. These cultures were used 
Ae : result i regard to ee eopien towards"t 
ae 4 hs and drawings with | 
x - lucida were made, but thane reproduced in figs. cs and. 
TANICAL pa Lasonctint,, 
| CORNELL Jon blend 
