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ment Station, from the Truck Experiment Station at Norfolk, 
Va., and elsewhere. The scientific men of the party at this point 
numbered about twenty. Guided by Dr. Melhus, who had the 
enthusiastic and appreciative assistance of a number of the local 
potato growers, bankers, and other business men, the party was 
taken, on the afternoon of their arrival, to visit the tuber unit, 
varietal and potato disease plots maintained by the government on 
the hills overlooking Caribou, and to various nearby localities 
where hundreds of acres of beautifully blooming potato fields were 
inspected. Under the instruction of Dr. Orton, Geheimrat Appel. 
Dr, Giissow, and others, the members of the party thus became 
more familiar with the characteristics and field conditions of cer- 
tain obscure potato diseases, new or unfamiliar to many, such as 
leaf roll, curly dwarf, mosaic, black leg, rhizoctonia, streak, etc. 
Some of these diseases, rhizoctonia and black leg, for example, 
were seen to be of a very serious nature, materially threatening 
the season’s yield of tubers; others, such as mosaic and leaf roll, 
while not apparently at present decreasing the number and size of 
tubers, promise trouble for the future if allowed to persist and 
spread without hindrance. On a later day, some of the party 
were privileged to examine the experimental disease plots of the 
government station, where problems of the growth, dissemination, 
control, etc., of potato blight, powdery scab, silver scurf and other 
diseases, were being carefully studied. 
On the following day, August 1, the whole group of thirty and 
more were taken in automobiles on a long and strenuous inspection 
trip of hundreds of acres of potato fields, covering nearly a hun- 
dred miles, and ending at night at the prosperous city of Houlton, 
in the southern end of Aroostook County. The next day, the 
return to Caribou was made by automobile and train; and on 
Monday, another long journey was made toward the north to 
Ft. Kent, and other districts and towns along the St. John river 
and the Canadian border. 
The hospitality and enthusiastic appreciation of the citizens and 
potato growers were clearly evidenced in all the localities visited, 
as well as at the banquets and receptions given by commercial 
clubs to the visiting scientists at the towns of Caribou, Presque. 
Isle, and Houlton. In the talks and speeches made at these more 

