10 
WORK OX THE WHITE PINE PE ESTER REST IN MINNESOTA 
and all currants and o-ooseberries upon the premises, whether infested 
or not, and wdiether occurring within the so-called 1,500-foot limit or 
outside of it. In Nursery B, where infested currants were found in 
addition to the affected pines originally discovered and 75 feet from 
the latter, the Entomologist's deputy continued to find infested branches 
on young pines in different blocks, exhibiting fruiting areas of this 
or previous years. Since danger of infestation from these pines in the 
present season w^as over at the date of the discovery, the blocks of 
pines containing same w-ere left for destruction later. The names 
and addresses of all consignees receiving pines for the past six vears, 
with size and variety of pine, w^ere secured from the proprietors of 
these nurseries. These were designated as “leads,” and most of them 
were follow^ed either by the Entomologist himself or a deputy, or by 
employees of the Plant Pathology Division or of the Eederal Bureau. 
The remainder wdll be handled next spring if any money is available 
for this wmrk. Wdien one understands that some of these leads, con- 
taining many trees, might take one to a nursery, from which, in turn, 
many of the same trees had been again sold, requiring further search, 
it wdll be realized that the task is not a small one. Suspected trees 
found by followdng these leads were destroyed by the owners, or by 
deputies with the owner’s consent. Nurseries A and B were both 
plotted, and location and numbers of all five-leafed pines, gooseberries 
and currants were showm on maps. 
A systematic inspection of all nurseries carrying pine w-as started 
early in the season, attention also being given in June, July and later 
to currants and gooseberries, as well as jnnes. No evidence of White 
Pine Blister Rust w^as found in other than the tw^o nurseries mentioned. 
This inspection wtis (juite apart from the regular annual’ inspection, 
w hich latter, this year, has been somewhat delayed on account of this 
emergency wmrk. On July 7th the quarantine w^as raised from Nursery 
A, it having been show n to our satisfaction that all evidences of the dis- 
ease, both on pines and Ribes had been eliminated from the nursery ; all 
pines, currants and gooseberries upon the place having been burned. 
The first conference upon the W hite Pine Blister Rust of Experi- 
ment Station authorities w^as held in Dean ATods' office, March 2d. 
At this conference representatives of the Minnesota Eorestry Board, 
the ^Minnesota l^orest Service, the Division of Plorticulture and of 
Plant Pathology, the College of Eorestry, and the State Nursery and 
( Irchard Inspection Service wxre present. It w^as then unanimously 
resolved to strongly urge the Eederal Elorticultural Board to place a 
quarantine on shipments of five-leaf pines and Ribes from those states, 
known to be infested with White Pine Blister Rust. The conference 
