44 INSECTS INJURIOUS IN 1902. 
part of wash to six of water; for any other Aphid one part wash 
to ten or twelve of water; for Mealy Bug the same. 
All sprays must be applied warm and with force in order to 
penetrate the woolly covering. 
Fig. 41.—Spongy Fungus (Scorias spongiosa Schw.), found in the honey dew of 
Schizoneura: (1) natural size; (2) portion of fertile branch 
much enlarged ; (3) ascospores; (4) three sporidia 
(from Ellis’ Pyrenomycetes). 
For the root form, bisulphide of carbon is now used. (Care 
should be taken not to injure the tree with this agent; ‘consult 
the Experiment Station). Strong soap washes are also used on 
roots of nursery stock, etc. 
