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ing are unanimous in their conclusions that for practical plant breed- 

 ing work the material to be used must be assembled in one place. 

 That the assembling of some of this material is not going to be easy is 

 apparent to anyone who knows about it. There will have to be much 

 traveling even after all jDossible has been done by correspondence, and 

 the one doing the traveling should have expert knowledge so as to 

 make wise selections of material. It is necessarily going to be some- 

 what expensive to gather this material and to give it the care needed 

 to get results in the quickest possible time. There will have to be one 

 or two persons commanding fair salaries, beside others doing the 

 rougher work of fertilizing, cultivating, etc. The results tlie first few 

 years will necessarily be somewhat meager, for the work of the first few 

 years will be largely assembling material and getting ready. It is prob- 

 able, however, tliat valuable preliminary work can be made by getting 

 permission to make use of trees in existing arboretums. There are none 

 that I know of that have more than a fraction of the material that 

 should be assembled in a nut arboretum, but they have enougli to enable 

 a start to be made, even though it would be working under unfavorable 

 conditions. It would also probably be possible to collect data as to the 

 flowering dates of some of the various varieties and species. They 

 frequently flower at such different dates that it is necessary to gather 

 pollen from one section and ship it to another. The difficulty of get- 

 ting these various factors to co-ordinate is such that sometimes it is a 

 matter of years to effect a desired hybridization, although fortunately 

 this not so generally. 



As to the location for a nut arboretum it would preferably be 

 where the largest possible number of nut species will do well. It should 

 not be too far north or too far south. Long Island is pretty good but 

 whether it is the best remains to be seen. I am inclined to think that 

 a more southerly location might be better. Considerable study and ob- 

 servation will be needed before this point can be decided. Wliile a nut 

 arboretum would better not be located in a large city there are many 

 considerations which make it desirable that it be not too far away from 

 a city of reasonable size. A nut arboretum should have management 

 and support such as to ensure continuous operation over a series of 

 years. It would benefit the entire country, or at least a considerable 

 portion of it. From that consideration it would seem as if the govern- 

 ment should establish it. On the otlier hand there are serious practical 



