Hooper, Robert [Editor]: The Anatomist's Vade-Mecum: Containing The Anatomy, Physiology, Morbid Appearances, &c. Of The Human Body ; The Art of making Anatomical Preparations, &c. To which are added Anatomical, Physiological, Medical, And Surgical Examinations For Students (London, 1811)

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tubercle nor crucial spine is seen :—the cuneiform pro-
cess;—and two portions between these, forming tie
sides of the foramen magnum, and the attachment
with the atlas.

OS SPILENOIDEUM.

Os sphenoidale. Os multiforme. Os cuneiforme. Os pterygo-
ideum. Os alceforme. Os vespertiliforme, Os polymorphon.
Os vespiforme.

The sphenoidal bone is situated in the middle of the basis
of the cranium, extending underneath, from one temple across
to the other. Its figure is very irregular ; and is compared
by some to a bat with its wings extended.

Processes. Two alee mujores, whose anterior part forms a
portion of the orbit; the inner surface has lying upon it a
portion of the middle lobe of the brain, and the whole exter-
nal surface is covered by the temporal muscle.—Upon the ex-
ternal surface. Two spi?ious processes, which are two narrow
points, projecting one behind each foramen spinosum. The
sphcenoidal spine, or azygous process, upon which the basis of
the vomer lies;—two pterygoid processes, each of which is
distinguished into a root, and two extended plates, or wings;
one external, which gives origin, on its external surface, to
the pterygoideus externus muscle, and on its internal surface,
to the pterygoideus internus muscle ; and the other internal ;
—two hamular, or hook-like processes, one on the end of the
internal wing of each pterygoid process, over which the ten-
don of* the circumflexus or tensor palati muscle turns.— Upon
the internal surface. ■ Two alee minores, which form the upper
part of the superior orbital fissures;—four clinoid processes,
two onterior and two posterior;—the processus olivaris lying
between, and a little behind the anterior clinoid processes.