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ere was a solemn nut-cracking ceremony, and all present tasted the meat and pronounced it good. We hope that that tree and many others will thrive for years to come to add to the bonds of friendship with these neighbors we have known. Lately I have arranged my work so that we may once again live in Ohio not too far from my boyhood home. Last year I tried once again to graft along the hillside scions from that prized hickory, and this time six out of seven grafts have grown. My field of work has been that of a chemist, engaged in industrial problems related to animal and plant products. Hence, my hobby and my day's work are productive of mutually helpful ideas. The literature which I review frequently contains suggestions applicable to the various phases of tree propagation. Though a few references are quoted in the bibliography at the end of this paper, these are for illustration only and comprise a very small number of those which have appeared. My experiments in nut tree propagation have been reported from time to time in the yearbooks of the N.N.G.A. and I intend in the remainder of this paper only to outline problems under a number of general headings in which I am particularly interested, and give some indication of procedures which seem worth while investigating. An important phase of nut growing to which I have given little attention is the search for new varieties. I find my interest in this aspect growing as I associate with the group of nut growers in Ohio, who through prize contests and active personal work are trying to discover superior nut trees in nature, yet I do not find in this the opportunity I seek for experimentation unless it may be in the matter of hybridization. Rootstock Propagation Rootstocks for walnuts and hickories are very easily grown from seed. Chestnuts are grown with variable success, and it would seem that particular care in drainage of the seed bed, and possibly the use of one of the seed fungicides, should improve chestnut germination. The present trend in the propagation of fruit trees is toward selection of particularly suitable rootstocks. Do some nut tree seedlings accept grafts more readily than others? We do not know. Numerous writers have discussed the idea of varying degrees of compatibility of rootstocks with scions and Jones[1] has brought together considerable evidence to relate incompatibility among plants with something parallel to allergy in animals. I
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