286 
The Ohio Naturalist. 
[Vol. XI, No. 4, 
We know that there has recently been a marked development 
in interest in forest planting, and that among all the lumber trees 
thus far utilized for this purpose white pine has been a great 
favorite. So far as I know, no record exists of the discovery of 
the rust (Cronartium ribicolum) on currants and gooseberries in 
the United States, but the disease may be serious from this point 
of view as well. Through the kindly co-operation of the Depart- 
ment of Nursery and Orchard Inspection, the Department of 
Botany of the Experiment Station has received specimens of this 
rust upon white pine seedlings growing in beds at Painesville, 
Ohio. Mr. Evans, the Deputy Inspector, who discovered the 
diseased specimens, stated that there was only one found among 
the large number of seedlings. The specimen is preserved in the 
Station Laboratory at Wooster. And of course both the Depart- 
ment of Nursery and Orchard Inspection and the nursery people 
are striving to stamp out the disease so far as that shipment is 
concerned. The trees at Painesville were imported in the spring 
of 1909 from Levavasseur & Co., of Ussey, France. Subsequently, 
Mr. Evans discovered one or more diseased specimens on premises 
at Akron, Ohio. This lot of white pine was imported in the 
spring of 1908 from E. T. Dickinson, Chatenay, France. 
Diseased Seedlings Probably of German Origin. We have 
from the observations of American visitors, notes that in the 
region of Ussey, and doubtless in that of Chatenay, there are no 
white pine grown. The French nurserymen had secured white 
pine seedlings more cheaply, as we had, by going to the German 
growers, and doubtless this is the explanation of the disease upon 
the seedlings imported from France. As stated in the Circular 38 
before quoted, it was previously known that many German 
growers of white pine had sent diseased seedlings to the United 
States, and these had been distributed throughout much of 
New York and in parts of Pennsylvania. 
