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gradually come to be planted much farther north than they originally were, I reasoned that this was because only the hardiest of them survived and these hardy ones therefore became the mother blocks for future grafting. This was an inescapable procedure which acted as a method of bud selection. I therefore assumed that by a careful choice of the hardiest among surviving twigs of the most recent graft of the Harriet apricot, when particularly severe winter weather had caused some injury, I could induce extra-hardiness in future grafts. I also believe that I have added to the hardiness factor of the apricot by making frequent grafts. It is my theory that the root stock is able to exert some influence over the top other than mere maintenance of life. By frequently uniting a hardy stock with a less hardy top, I think that the individuality of the top part may be somewhat broken down and the extra characteristic of hardiness added to it. After the fifth re-graft of this apricot made in eight years, I am convinced by its appearance and behavior that it is capable of becoming a reliable apricot for the region around St. Paul. Today the apricot still exists grafted on plum at my nursery at River Falls, Wisconsin, and the weakness of the tree seems to be in the union between the top and the plum stock. If this union were not so corky and large and succulent it might be less injured by our winters; therefore it is quite apparent that the plum is not a congenial stock for an apricot, at least it does not produce a satisfactory union. I am now making tests with this same variety by grafting it on more hardy apricot seedling stock such as the Prof. N. E. Hansen of Brookings, South Dakota, introduces. Chapter 11 PESTS AND PETS The pocket gopher is an herbivorous animal which attains approximately the size of a gray squirrel. It has a sleek, grey-brown coat of fur which is almost as fine as that of the mole and would, I think, make a good quality fur except that the skin is too tender to stand either sewing or the wear that fur coats have to undergo. I learned this by trapping them and having a furrier try them out, as I knew that the quickest way to get rid of a pest is to eat it or use its hide. Since I found its hide to be of no practical value, I enjoined my troop of Boy Scouts, a willing group of boys, to carry out my suggestions that they skin and prepare one of these animals in a stew. Gophers are purely herbiv
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