69 



not see it again for months, and in the meantime the buds would be 

 strangled or knocked oft". Another little hickory tree stood in the 

 roadw.iy. Harrows, plows, wagons and even logs were dragged over it. 

 (rraf'ts on lH)tli these trees cauglit rather readily last spring. In fact 

 two black walnut grafts on this little butternut were t^o of the very 

 few that I got to grow at all last year. My walnut grafting was 

 almost a total failure. J have this to say, however, that I had no 

 dormant walnut scions, my scions all being cut in May or June. 



Mr. Jones, by marking the site of his patch bud several days in ad- 

 vance, admirably carries out this idea by locally stimulating the cam- 

 bium cells. Dr. Morris's scheme of using white wax, besides regu- 

 lating sap pressure, allows the actinic rays of the sun to stimulate cellu- 

 lar acti\aty. Cutting the top out of the tree, which disrupts the normal 

 circulation and throws it into the few lower limlis, besides stimulating 

 the cells into activity, has apparently in a large measure accounted for 

 the slight success that I have had. Other methods such as injecting 

 some substance under the bark, applying antise))tics, or some stimu- 

 lating' chemical in a similar way, as "Scarlet Red" is used in skin 

 grafting to increase epithelial growth, may aid materially. Certain 

 chemicals applied to the tree and leaves, as used in sprays, seems some- 

 times to stimulate growth in a way that can hardly always be accounted 

 for by the checking of the disease for which it was placed. 



Much more could be written on cellular stimulation but enoug'h has 

 been said to encourage others to make observation in this connection, 

 for it is highly probable that the lack of proper stimulation of the 

 cambium accounts for more failures in top working trees than we are 

 aware of. 



3rd Control of Plant Cell Nutrition 

 With this topic we are proba'bly less concerned in its relation to 

 grafting than when the growing and bearing stages come. However, 

 certain nutritional disturbances appear early and the more vigorously the 

 stock is growing beforehand the better progress, of course, the grafts 

 will make when they are started. Whether or not tlu y will start more 

 readily have I been unable to ascertain, but I hnvv a bunch of little 

 fellows with a growth of only an inch or so, and so puny that I can- 

 not account for it in any other way than a lack of j)roper nutrition. 

 Many of these little trees, used vas stock, are very old in comparison 

 with their size .nul they will jirobably be dwarfs all their lives. It 



