As will be seen by the illustration below, Half-solid Kensington is done in the regular satin or filling stitch. If a similar effect is to be brought out with running stitches, of course all the lines will be either horizontal or perpendicular, to correspond with the threads of the material. One color, or at most a few, is all that can be employed — the proper colors must come to the surface in the proper places, the greater part being kept underneath. If desired a different color may be run in for a background.
Click on picture to see more detail.
Note:The only reference I have found for this stitch was in a publication dated 1896. It seems after that, it was called by the general term "Long and Short" stitch.