Considerable care was exercised in determining the number of right-and left-handed flowers opening on the racemes of different branches at the same time.

Only those flowers were considered which had opened simultaneously. In order to effect this, all the flowers were removed from the plant the evening before and note was made of the condition of those opening the next day.

The following diagram shows the conditions of flowers opening on three plants on the morning of August 20, braces indicating the branches of the plant, and the straight lines the racemes; the numbers of right- and left-handed flowers being indicated under the raceme by r and l. ([See page 20].)

From the table, it will be seen that there are on the first plant 8 left-and 11 right-handed flowers; on the second, 24 left-and 27 right-handed; on the third, 7 left-and 9 right-handed flowers. The numbers of right-and left-handed flowers occurring on the divisions a and b of the main branches, A and B, of the three plants, are as follows:

On the three plants, with 36 racemes bearing branches, there were 18 branches which produced only one kind of flowers. Of these branches, however, 15 bore only 1 flower each. From this it will be seen that the flowers opening at the same time on any one branch are not all either right-or left-handed. In the large branches, A and B, the number of the two kinds is quite evenly distributed; in only one case-branch B of plant III—is a large per cent. of the flowers alike. Even in branches of the second denomination—Aa, Bb—flowers of one kind occur exclusively, where more than one flower is found, only in Ba of plant III.

In addition to the above table, observations were made on three plants to determine the regularity with which they bore right-and left-handed flowers. On three successive mornings the plants had produced:

I.II.III.
Right. Left.Right. Left.Right. Left.
First morning 7 7 6 6 8 9
Second morning    7 1110 714 17
Third morning16 10 8 1213 10
  Total30 2824 2535 36