along, till they came to what is termed a "dividing
ridge," which is a cross wave, as it were, that cuts the
others in two, thus forming a continuous level. Here
they advanced more easily; but the advantage was
equally shared with their pursuers, who continued the
headlong pursuit with occasional yells, which served to
show the fugitives that they at least did not gain
ground.
A little to the right of the direction in which they
were flying a blue line was seen on the horizon. This