l cell activity at the junction of stock and scion.

[Illustration: Dr. Morris's march method of grafting with balanced
aquarium. 1. Point of union to be covered with grafting wax after
binding with raffia. 2. Loose plug of moss to lessen evaporation. 3. A
living water plant.

The "aquarium" is made out of an ordinary large test tube. Any small
bottle would do as well.]

This method served a purpose in advancing our knowledge of the subject,
but not enough grafts caught to encourage me greatly. Following out the
same line of thought, I began this year by making union between stock
and scion according to inarch principles. The scion instead of remaining
attached to its parent plant, according to former inarching method, had
been transferred to the stock, leaving two or three inches of scion free
below the point of grafting, as illustrated in the drawing. The proximal
part of the scion was then inserted into a test tube containing water.
In this case, as with placing the test tube at the top of the scion,
difficulty was found in preventing the growth of microoerganisms in the
water. The addition of benzoate of soda, borax, boracic acid, and
sulphate of copper, while preventing the development of microoerganisms,
seemed also to be objectionable to the physiologic processes of the
plant. It occurred to me that the principle of the balanced aquarium
might be applied, and acting upon this idea specimens of a pond weed
(Utricularia) were introduced into the test tubes. This seemed to settle
the water question completely, but it was well along in the summer
before I made grafts and applied this principle. From one to four
leaves, or parts of leaves, were left upon grafts which were applied to
stocks according to this new inarching method. All of these leaves
remained green until autumn, and fell with other autumn leaves of the
stock. Two specimens which I have cut away for examination seemed to
show a very good union between stock and scion.

I am presenting a description of the new inarching method promptly,
before obtaining more extensive statistics, in order that members of
this society may apply it experimentally next spring. Should it succeed
according to present promise, it will allow nurserymen at least two
months of grafting season, and they will not have to rush their work. In
addition it will perhaps open up a method of grafting which may be
employed freely with nut trees in the northern states.

Another unusual