Mr. Frank L. Bassett, Hammonton, N. J., notes: "Some time ago I put in some cuttings of Tradescantia zebrina that had half of each leaf green and the other half yellow. In part of them the green was the uppermost color. In the others the yellow was the upper color. When they grew I was somewhat astonished to find that the lateral shoots were not variegated at all, but found that in every case the lateral shoot was colored the same as the lower half of the leaf it grew from. Can you tell me the why of this ?"