| The arc was extended from an octant to a sextant and a stout handle was added at the back of the instrument. |
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| The model put forward for the action of BDL suggests that auxin is involved in determining hypophyseal cell fate at the octant stage. |
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| Clark used celestial observation to determine latitude, triangulating position with an octant. |
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| It represents the octant, a navigational instrument that was replaced by the sextant in the latter half of the 18th century. |
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| William Logan won an octant, a less advanced version of a sextant, as a mathematics prize in university. |
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| The predecessors of the sextant included the astrolab and the octant, both of which operated on the same principle. |
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| At the octant stage the embryo proper and suspensor are clearly distinct. |
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| The partition of the quadrant cells in a transverse plane then produces an octant stage. |
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| In the octant and the sextant, two mirrors one fixed, the other movable bring the image of the Sun into coincidence with the horizon. |
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| The scutellum arises from octant cells, which also contribute to the cotyledon. |
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| He made an octant for himself of brass and ivory, and used it during his service. |
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| The need for more accurate measurements led to the development of a number of increasingly accurate instruments, including the kamal, astrolabe, octant and sextant. |
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