230 EXPERIMENT STATION RECORD. 



root, and terminal cleft grafting are described, annular budding and 

 cleft sap grafting being recommended. In addition, the harvesting 

 and marketing of nuts in general are brietly noted. 



The culture of the almond {AmygdaluH communis) as followed in Cali- 

 fornia is discussed at some length, with especial attention to the prep- 

 aration for market. Descriptive notes are given on 18 varieties grown 

 in the United States and 7 varieties imported from abroad. 



Three species of walnut are cited as being of commercial imiiortance 

 iu the United States, the black walnut {Jtuilans nigra), butternut [J. 

 cinerca), and Persian walnut (J. rcgia). Elaborate cultural notes are 

 given on the Persian or English walnut, which is grown extensively in 

 California, and 20 varieties are described. Three species of Japanese 

 walnuts are being introduced, and it is thought these may prove useful 

 economic trees. Desirable nuts have resulted from the crossing of 

 different species of waliuits. The black walnut and butternut are 

 usually gathered from wild trees, but their domestication is urged and 

 descriptive notes are given for G choice wild varieties of black walnut. 

 The California walnut {J. californica) and another species {J.rupeHtris) 

 are noted, and the first is believed to be desirable as a stock for the 

 Persian walnut. 



Of the several species of hickory nuts but 4 are considered worthy 

 of the attention of nut growers, the pecan {Hicoria pecan), shagbark 

 {H. ovata), shellbark {H. laeiniosa), and one or two varieties of the pig 

 nut {H. glabra). The culture of each of these is described, that of the 

 pecan being treated at length. Annular budding has proved most 

 successful with pecans, and descriptive notes are given on 16 choice 

 varieties. Of the hickory nuts proper the shagbark is preferred and 

 12 named varieties are described. 



The culture of the European hazelnuts or filberts {Corylus avellana 

 and C. iuhulosa) is described with some detail, and the adoption of like 

 methods with the American hazelnuts {G. americana, C. rostrata, and 

 C. californica) is urged. 



The American chestnut {Castanea dcntata), European chestnut (0. 

 sativa), and Japanese chestnut {€. japonica) are discussed and direc- 

 tions given for their growing in orchards and preparation for market. 

 Descriptive notes are given on 17 varieties of American chestnuts, 9 

 of European, and 15 of Japanese. In addition brief mention is made 

 of the chinkapin (C. piunila) and Western chinkapin {Castanopsis 

 crysophylla). 



Nine species of pine trees are cited as yielding edible nuts, the piQon 

 [Pinus edulis) affording the most plentiful crop of wild nuts. 



The culture of the cocoanut (Cocos nncifera), which is now beginning 

 to be grown extensively in southern Florida and the adjoining keys, 

 is treated at some length, and the extension of this industry is 

 recommended. 



