~New YorK AGRICULTURAL EXPERIMENT STATION. 115 
‘size and shape of the spores vary somewhat. On Rubus, the 
spores are said to be globose with a diameter of 3 to 44. The 
spores of the cane blight Coniothyrium have, approximately, these 
dimensions and their usual form may be properly described as 
globose, although many of the spores might be called ellipsoidal. 
(Plate X, Fig. 7.) 
We have not had the opportunity of examining authentic speci- 
mens of C. fuckelit on Rubus or, in fact, on any of its hosts except 
Tecoma radicans, the trumpet creeper. Through the kindness of 
Dr. W. G. Farlow we have been able to examine a fragment of 
a specimen on 7’. radicans collected by Saccardo. In this speci- 
men the spores are considerably longer than broad and nearly 
hyaline. They are decideuly different from the spores of the 
cane blight Coniothyrium; but C. fuckelii, as described, is a vari- 
able species and it may be that our fungus belongs here notwith- 
standing. 
INOCULATION EXPERIMENTS. 
General statement.— Inoculation experiments with ure cul- 
tures have been made on new canes and fruiting canes of both 
red and black raspberries and the new canes of dewberry and 
blackberry. The inoculation has been done in divers ways with 
cultures from three different sources. These experiments will 
now be described in detail and in chronological order. 
Experiment No. 1.— Date of inoculation, July 18, 1900. Five 
new canes of red raspberry (variety, Pride of Geneva) were inoc- 
ulated in the following manner: About one foot below the tip of 
the cane the bark was slightly abraded with a flamed scalpel. 
On the wound thus made there was placed a bit of the Coniothy- 
rium from a pure culture originally isolated in 1899. The culture 
used for inoculation was a mixture of two cultures—one forty-six 
days old and containing multitudes of spores, and the other six 
days old, without spores. The final operation consisted in cover- 
ing the wound with grafting wax which was wound closely about 
the cane in such manner as to exclude the air and foreign organ- 
isms. (See Plate VII.) 
On September 18, two months after inoculation, it was found 
that on all five canes the leaves about the point of inoculation 
