198 DR. J. MURIE ON THE FORM AND STRUCTURE OF THE MANATEE. 
Fig. 23. Semidiagrammatic view of stomach as it appears on the cesophageal or upper 
surface. 
Fig. 24. A transverse section, about the middle of the cardiac glandular appendage, 
showing its irregular diverticulate central cavity and surrounding gland-cells. 
Fig. 25. Piece of the small intestine, towards the duodenal end, showing form of rug 
and P, Peyer's glands. 
Fig. 26. Ditto, from the ileum, with glands (Z) or crypts of Lieberkiihn? m, muscular 
coat. 
Fig. 27. Portion of gut from near the rectum: JZ, glands, as above. 
Fig. 28. Ileo-colic segment of the intestine, sliced open to show interior structure. 
il, ileum; c, colon, * its enlarged commencement; Coe’, exterior, and Coe’, interior of 
the cecal appendages; gi, compound and sacculate ileo-colic valve-gland; m, thick- 
ening of muscular coat, the valye’s wall. 
PLATE XXIV. 
Fig. 29. Short deep muscles of the ventral surface of the neck; intervertebral exit of 
the cervical and brachial plexus of nerves, and membranous chambers, postero- 
base of skull. Right side with upper layer and a partial outline of shoulder ; 
left moiety, deeper view, and opened basicephalic chamber. 
R.ama. Rectus capitis anticus major. S.mg. Insertion of serratus magnus into 
R.a.mi. Rectus capitis anticus minor. Ch. Cephalo-humeral. [atlas. 
Lc’, Le, Le. Longus colli, its three parts. St.m. Tendinous insertion, sterno-mastoid. 
Ri. Rectus lateralis. S.h. Stylo-hyoid cartilage, cut cranial 
Sca. Scalenus. origin. 
1, 2, 3, 4, 5, 6, 7, & 8, anterior spinal cervical nerves issuing from the intervertebral 
foramina; Ph, phrenic nerve; Fn, facial nerve at exit; na, posterior nares; ptp, 
pterygoid process; Hws, Eustachian sac, opened on left side. 
Fig. 30. Anterior segment of the body, with the limbs cut short. Dissected so as to 
lay bare chiefly the heart, main vascular trunks, and complex rete mirabile of 
the neck and upper limb, The sternum has been dragged outwards to the 
left side, showing the under surface of its left osseous moiety and trifid 
cartilages. The mammary gland and enlarged lymphatics partially occupy 
the right side of the chest. On the left side of the neck the jugular veins 
are intact, and the rete mirabile, cervical and axillary, superficially displayed. 
On the right side a deeper view is given. The large venous trunks and 
portion of the rete mirabile are removed, exposing the cervical and axillary 
plexus of nerves. The digastric muscle is cut away, and the parotid gland 
everted. 
Heart and vessels:—v, right, and v*, left ventricles; a, right, and a*, left auricle; 
