The morning chosen for the trial was warm and still.  No danger from gusts of wind was to be anticipated.  Mounting the glider on two wheels from the old tricycle, patched up for the occasion, they wheeled it up to the field and managed with some difficulty to hoist it over the gate, after having cleared a way through the obstructing brushwood. At the far end a few cattle were peacefully grazing.  The well-cropped hill was a smooth inclined plane of springy turf.