Book,  Paragraph

 1 III,  1|     vein, from which ducts or blood-vessels extend, one to each of the
 2 III,  3|      the veins. There are two blood-vessels in the thorax by the backbone,
 3 III,  3|      to be full of air. These blood-vessels have their origins in the
 4 III,  3| distinctive characteristic as blood-vessels, whereas the heart is as
 5 III,  3|    blood.~The branches of the blood-vessels lie above the tubes that
 6 III,  3|     vessel there extend small blood-vessels at each rib and each vertebra;
 7 III,  4|   lesser one of the two chief blood-vessels, designated the aorta, branch
 8 III,  4|    From each of the two great blood-vessels there extend branches to
 9 III,  5|    point of origin, as do the blood-vessels.~For the veins have the
10 VII,  8|     is a sheath wrapped about blood-vessels which have their origin
11 VII,  8|      one. Around each pair of blood-vessels are membranes, and surrounding