(1) At the octant (eight-cell) stage the embryo proper and suspensor are clearly distinct.(2) Clark used celestial observation to determine latitude, triangulating position with an octant .(3) The arc was extended from an octant to a sextant and a stout handle was added at the back of the instrument.(4) The model put forward for the action of BDL suggests that auxin is involved in determining hypophyseal cell fate at the octant stage.(5) Instead of compasses, octants , and two-pole chains, modern digital GPS units determine position and direction.(6) Included in those downloads are the last two octants needed to complete the color, 360-degree u2018mission success' panorama.