THE POSTERIOR SURFACE OF THE FRONTAL BONE

1, the frontal enlcus; 2 the foramen cæcum; 5, the roof of the orbit; 8, the nasa sping; 10, the internal orbital apophysis; 11, the entrance to the sphenoldal sinus; 1¥, external orbital apophysie, (AFTER SAPPEY.) Interparietal b.—Flat. Lat., o a lat a (seu plan a). Fr., os lats, Ger., breite (oder platte)’Knochen. B's the length and readth of which greatly exceed their thickne (e. g., the scapula). [L, 142, 172.]—Forehead b. See Frontal b.—Fork b. See FurcuLa.—Frontal b. Lat., os front is (Soommerring), os frontale. Fr., os frontal, frontal’ principal [Aga iz]. Ger., Stirnbein, Hauptbein. A single b. which forms the fore part of the cranium and the greater part of the upper roof of the orbits, It arches upward and backward and articulates with the parietal sphenoid, nasal, malar, superior maxillary, lacrymal, and ethmoid b’s. [L, 142, 153.|—Fronto-nasal b. Seé Nasal b.—Fronto-occipital b. (AFTER SAPPEY.) frontal eminences; 2,,% the super cill ary arches; %, the glabella; 4, 4, the