SHEEP, TnEIIt DISEASES. 
327 
The bone which forms the elbow-ulna does not support much of the 
Weight of the animal, but serves to attach the powerful muscles, so notic- 
able in bones, with good fore-arms. The attachment of the ulna to tho 
radius forms a lever. The carpas or knee is composed of seven distinct 
bones, placed in two rows. The upper io\v articulates with the radius ; 
the metacarpus. 
Explanation — 1 — Occipital bone, depressed 
Dut of danger. 2 — The parietal bones, the 
juture having disappeared, and also out of 
danger. 3 — The squamous portions of the 
temporal bone — the buttress of the arch o. 
tho skull. 4 — The meatus auditorius, or 
bony opening into the ear. 5 — The frontal 
bones. 6 — The openings through which blood-vessels pass, to sup* 
ply tho forehead. 7 — The bony orbits of the eye. 8 — The zygo* 
matic or molar bones, very much developed. 9, 10 — The bones of 
the nose. 11 — The upper jaw bone. 12 — The foramen, through 
which the nerve and blood-vessels pass, to supply tho lower part of tho 
face. 13 — The nasal processes of the intermaxillary bones. 14 — The 
palatine processes. 15 — The intermaxillary bone, supporting the cartila- 
ginous pad, instead of containing teeth. 
Explanation — 1 — Nasall bone. 2 — 
Upper jaw bone. 3 — Intermaxillary 
bone supporting the pad, supplies the 
place of upper front teeth. 4, 4 — 
The frontal sinus. 5 — Cavity or sinus 
of the horn, communicating with the 
frontal sinus. It is here shown by re- 
moval of a section of the base of tho head of sheep — vertical section. 
horn. 7 — The frontal bone. 8 — Verti- 
cal section of the brain. 9 — Vertical section of the cerebellum, a— 
The cineritious portion of the brain, b — The medullary portion of the 
brain. 10 — The ethmoid bone. 11 — The cribiform or perforated plate 
of the ethmoid bone. 12 — The lower cell of the ethmoid bone. 13 
—-The superior turbinated bone. 14 — The inferior turbinated bone. 1? 
-—The sphenoid bone. 
Importance of the Head to Breeders. 
The head of the sheep is one of the important points by which to esti- 
mate the quality and profitableness of the animal. The frontal bone (1) 
projeota both forward and laterally, and gives to the sheep a peculiar 
