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VOCABULARY. 
Spheroid, approaching in form to, or resembling a sphere. 
Spiculae, spines or sharp projections. 
Sternum, the breast bone. 
Stigma, plural, stigmata; the extremity of the pistil of plants. 
Storgee, the sentiment or instinct of parental affection. 
Stum, an unfermented mass of liquor. 
Subclavian, a term applied to parts which are situated beneath the clavi¬ 
cle or collar bone as the subclavian artery, &c. 
Sugescent, employed in sucking. 
Sui generis, of a peculiar kind or character. 
Sutures, the union of bones by their edges, without movable joints, 
as in the flat bones of the skull. The edges in this case are often 
notched like the teeth of a saw, and the line of union resembles a 
seam. Whence called a suture. 
Synovia, the liquid w r hich lubricates the internal surfaces of the joints to 
give facility of motion. 
T. 
Telum imbelle, a harmless weapon. 
Thorax, the chest. 
Tibia, the main bone of the leg, extending from the knee to the foot. 
Its projecting extremity forms the inner ankle, and its ends enter into 
the formation of both the knee and ankle joints. 
Trachea, the windpipe. 
Tubercle, a swelling or prominence. 
U. 
Umbilical, proceeding from or relating to the navel or umbilicus. 
Univalve, consisting of a single valve or shell, such as the snail, cockle. 
Urachus, a vessel leading from the bladder to the navel before birth, 
which is converted into a ligament after birth. 
Ureter, the tube conveying the urine from the kidneys to the bladder. 
V. 
Vallisneria, the name of a plant. 
Valvulae conniventes, folds formed by the internal membrane of the 
intestines, constituting partial valves, and intended to retard the pas¬ 
sage of the food. 
Vascular, containing or consisting of vessels. 
Vena cava, one of the great veins which brings the blood from the ex¬ 
tremities of the body to the heart. 
Ventral, of or appertaining to the belly. 
Ventricle, a term applied to several small internal cavities in the body, 
as the ventricles of the brain and of the heart. 
Vertebrae, the separate bones constituting the back bone. 
Viscus, plural Viscera; the internal organs of the body, as lungs, heart, 
stomach, liver, brain, &c. 
Viviparous, producing or bringing forth young alive. 
Vortex, plural Vortices; anything whirled round. The heavenly bod¬ 
ies have been formerly supposed to be carried around in their orbits by 
certain vortices or whirlpools which were imagined to exist. 
