SYSTEMATIC SYNTHESIS OF TISSUES INTO ORGANS. 257 



rounding skin, and affords a nidus at various points for 

 the deposit of fat, to serve as a packing, or to round the 

 limbs and give perfection to the beautiful forms already 

 moulded by the skeleton and muscles. 



555. Remark. It is UTTERLY IMPOSSIBLE TO EXPRESS the delightful 

 emotions the mind experiences as it contemplates the developing beauty 

 that begins to clothe the uncouthness of the skeleton, in which was 

 really the basis and the purpose of all that is lovely hi the human form 

 or graceful in its motions, though unseen by the unprophetic eye of 

 ignorance. 



556. In the midst of, upon, and sometimes through, 

 the muscles, THE BLOOD-TUBES AND NEKVES EXTEND, 

 from their centres to their terminal points ; the larger 

 arteries being buried deeply beneath muscles, and thus 

 protected from injury and loss of heat. 



557. Thus EVERY MUSCLE BECOMES a heart to other 

 Blood than that which it receives, since it presses upon 

 all the vessels in its neighborhood, and, owing to valves 

 in the veins, has the effect to keep the Blood moving 

 through its circuit. 



558. lllus. When a person is bled from the arm-vein, he is direct- 

 ed to grasp something and alternately loosen his grasp, when each con- 

 traction of his muscles spirts out the Blood. 



559. Inf. A PERSON MAY CORRECTLY BE SAID TO HAVE as many 

 voluntary hearts as he has voluntary muscles. 



560. THE POWER WITH WHICH MUSCLES CONTRACT i 

 almost beyond belief, the influence which controls them 

 acting so very easily. 



561. lllus. A person walking against anything, or swinging his 

 hand against it unexpectedly, strikes with a force that surprises him. 

 A person raising or holding a hundred pounds' weight in his hand, eigh- 

 teen inches from his elbow, exerts a force with the muscle (Biceps) up- 

 on the front part of his upper arm of no less than eighteen hundred 

 pounds, or almost a ton, since the lower end of the muscle is attached 

 not more than an inch from the centre of the joint or fulcrum. When 

 a person stoops and raises himself, the power exerted by the muscles 



555. What ? 556. Where do ? 55T. What does ? 558. Illustrate. 

 559. What may ? 560. What said of ? 561. How illustrate ? 



