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rolling, the black walnut does quite well on the uplands, but by the 

 time it gets to be 25 or 30 years old in the plain section, the trees 

 succumb. 



This is one of the trees in Georgetown, a part of Washington. 

 You may recognize Mr. Littlepage under one of the trees. The trees 

 in Washington are extremely variable in their bearing capability and 

 in their ability to survive. You will find records of at least a dozen 

 that have passed off for one that has survived. A number of experi- 

 menters recently have been working with lime on the theory that the 

 Persian walnut is an alkali-soil requiring species. There is a good 

 deal of evidence in support of that theory. All the walnuts in Cali- 

 fornia are grown in alkali soil. In the East, Mr. Jones told us 

 once that he found in an acid soil the Persian would pass out. Mr. 

 Littlepage showed me two trees recently that he limed early this 

 spring, trees that were ten years old and three feet high. He told 

 his man to put on all the lime they could; he did not care if he killed 

 them as they were not any good as they were. And this year they 

 have a growth of four feet. Mr. Bixby has been studying along the 

 same line, and he tells me he cannot account for the fact that Persian 

 walnuts which he has at Baldwin have not done well, whereas they 

 have done so in parts of the country where climatic conditions are 

 very much more severe. Climatic conditions on Long Islnad are very 

 much modified by the proximity to water on all sides. 



There are a number of varieties that were propagated by Mr. 

 Jones in the East and a good many of his trees are growing and will 

 doubtless be heard from, one way or the other, sooner or later. We 

 are not going to spend a great deal of time on this species but before 

 we leave it I am going to tell you one thing that is of greatest interest 

 to us all and that is that Mr. Jones, as you know, imported seed of 

 walnuts from north China, grew the seedlings and sold them wholesale 

 to a nursery man. In Michigan, not far from the Indiana state line, 

 only a few miles north of Elkhardt, there is an engineer from Chicago 

 who bought a farm of 300 acres as a summer place. That farm is 

 between two small lakes which have such an influence on the climatic 

 conditions there that he is able to grow such tender plants as roses 

 which are not generally grown successfully in that part of the country. 

 In a round-about way he acquired perhajDS 100 or more of those 



