New York AcricutturaAL EXPERIMENT STATION. 359 
Puate XXX. Fig. 1.—Apple tree bark inoculated with cul- 
tures of Spheropsis from cankered apple 
limbs. Inoculations were made in the outer 
bark; the fungus was unable to reach cam- 
bum but made small wounds wm the outer 
bark. Where the bark has been removed the 
scars resemble those shown in Fag. 2. 
Fig. 2.—Section of limb shown in Plate XXIX, 
ig. 1, enlarged to show scars more wn detail. 
Fig. 3.—Limb of a large apple-tree inoculated 
m spring of 1898 with culture of Spheeropsis 
from cankered apple tree limb. Photographed 
fall of 1899. The canker enlarged materially 
during the present season. Pyendia of 
Spheropsis are abundant on dead bark and 
decorticated wood. 
Puate XX X1.—I/noculation experiments with nursery stock. 
Fig. 1.—Apple tree moculated with cultures of 
Spheropsis from cankered apple-tree limbs, 
showing what was designated “a very good” 
growth of the fungus. 
Fig. 2.— Pear tree inoculated with cultures of 
Spheropsis from cankered apple tree lumbs, 
showing very good growth of the fungus. 
Fig. 3. 
cultures of Spheeropsis from decorticated wood 

Japanese plum tree wmoculated with 
of hop hornbean. Very good growth of the 
fungus. 

Apple tree mnoculated with cultures of 
Se chcis from pear twigs, a gaad slight 
growth of the fungus. 
Fig. 5.—Check apple tree; punctured but not 
inoculated. 
