e cleft of the width of the scion only is desirable, or
better yet the "split bark" method devised by Mr. E. A. Riehl. A
straight split is made in the bark of the end of the stock, and the
graft crowded down into this split so that it remains between bark and
wood finally. My own method for large stocks, is what I have called "the
slot bark method." This consists in turning down a width of stock bark
measuring the same as the scion in width. When the scion has been
inserted into this slot so made, the bark is turned up over it again and
fastened there. By this method I have put scions in the trunks of trees
nearly a foot in diameter and at any chosen point, sometimes several
feet below the ends of cut branches. One may cut off the top of a large
hickory tree and then peg the trunk full of scions by means of bark
slots.

Another important point in hickory propagation work consists in the
employment of the Spanish windlass for fastening graft and stock
together. The old time wrapping of twine or of raffia had to be released
in order to allow growth at the point of union of scion and stock. When
cord is used it cuts deeply into the new growth, and raffia, which is
placed on flat, will be burst open. In either case new wrapping is
required at a precarious time, according to old methods. The Spanish
windlass, which is used in surgery for controlling haemorrage, seemed to
me to be applicable for fastening scions in place. It consists in a
paraffined cord with ends tied in a firm knot but hanging loosely about
the graft and wound. A wooden skewer or any small lever, is then
inserted into the loose loop of cord and twisted about until the part of
the cord about the graft wound is so snug that it holds the scion in
place more firmly than it can be held by any other sort of wrapping. In
order to prevent the cord from cutting into the bark, two shields of
wood or metal an inch in length, are interposed between cord and bark.
The lever of the Spanish windlass is fastened with a cord or with a
galvanized nail in order to prevent the windlass from unwinding and the
whole covered with melted paraffin. This may remain in place for two
seasons without change, holding the scion firmly in place all of that
time and requiring no attention. The growing stock separates the two
shields very much as it might separate two stones in the field and
automatically unwinds the Spanish windlass by sheer force, just enough
to allow growth without any u