DISEASES OF THE QUINCE. 89 
tained within the peridia may germinate, and produce 
not only one, but many vegetative spores, which are ex- 
ceedingly minute, and may be regarded as the embryos 
of a fresh crop of fungi. If a vertical section be made, 
the fungi will be seen to spring from beneath, the spores 
or protospores being clustered at the bottom. The tooth- 
like fringe is only a continuation of the cellular substance 
of the cups. 
It is possible that the fluid parts of the spores are 
absorbed by the growing plant, and as the result, the 
plant has become inoculated with the virus, which is so 
destructive as often to discourage the horticulturist. It 
Fig. 59.—SPORE OF THE RS- 
TILIA, MAGNIFIED 400 
DIAMETERS. Fig. 60.—ALLORHINA NITIDA, 
requires a great stretch of the imagination to reach the 
possible limit of their mysterious increase and consequent 
injury. 
The spores of the Restilia aurantiaca are from 
twenty-five to thirty thousandths of a millimeter in 
diameter. j 
The only effective remedy yet discovered, is to gather 
aud burn the affected parts of stems and fruit before the 
spores are scattered to spread the disease. 
The festilia aurantiaca on twigs attracts tne com- 
mon green and brown dung beetle, Allorhina niiida. It 
isa scaribeide about the size of the common brown May 
beetle, and very strong. ‘This beetle, though a friend to 
