WdUK OX 'nil-: w iirn-: riXK r.Lis'n-:K kl'ST in .Minnesota 1/ 



and all currants and goosel)erries upon the premises, whether infested 

 or not, and whether 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 73 feet from 

 the latter, the Entomologist's deputy continued to find infested hranches 

 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 was over at the date of the discovery, the blocks of 

 pines containing same were left for destruction later. The names 

 and addresses of all consignees receiving pines for the past six vears, 

 with size and variety of i)ine, were securetl from the proprietors of 

 these nurseries. These were designated as "leads," and most of them 

 were followed either bv the Entomologist himself or a dejjutv, or by 

 employees of the Plant Pathology Division or of the Eederal Ihireau. 

 The remainder will be handled next spring if any money is available 

 for this work. \Mien one understands that some of these leads, con- 

 taining many trees, might take one to a nurserv, from which, in turn. 

 many of the same trees had been again sold, requiring further search, 

 it will be realized that the task is not a small one. Suspected trees 

 found by following 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 shown on maps. 



A systematic inspection of all nurseries carrying pine was started 

 early in the season, attention also being given in June, Julv and later 

 to currants and gooseberries, as well as pines. No evidence of White 

 Pine Blister Rust was found in other than the two nurseries mentioned. 

 This inspection was quite apart from the regular annual inspection, 

 which latter, this }ear, has been somewhat delayed on account of this 

 emergency work. ( )n July 7th the quarantine was raised from Nursery 

 A, it having been shown 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 White Pine Blister Rust of Experi- 

 ment Station authorities was held in Dean Woods' offfce, March 2d. 

 At this conference representati\es of the Minnesota Forestrv Board, 

 the Minnesota Forest Service, the Division of Horticulture and of 

 Plant Pathology, the College of Forestry, and the State Nurser\- and 

 Orchard Inspection Service were present. It was then unanimously 

 resolved to strongly urge the Federal Horticultural Board to place a 

 quarantine on shipments of five-leaf pines and Ribes from those states, 

 known to be infested with \\diite Pine Blister Rust. The conference 



