Saturniid (Buck Moth) Eggs

These look like the eggs of a large moth, most likely a Buck Moth which lays its eggs in rings around the twigs of the host plant. The eggs completely encircled the branch for a distance of about 2 cm. It is hard to figure how the moth did this, up and down the branch in a line, or continuously circling the branch....Family Saturniidae. The adult moth was spotted previously:
http://www.projectnoah.org/spottings/19379290/fullscreen.