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PHYSIOLOGY AND ANATOMY. 3 
The skeleton has two hundred and fifty-two bones, and five 
hundred and ninety-seven muscles—all are: formed from the — 
blood, and that is made from the food we eat. Nearly every 
thing is strengthened and improved by use, and weakened by 
disease. Hence you must take much exercise in the free, 
pure air of heaven; do not be fearful about running and 
jumping, so as to use all our muscles. There is a substance 
which surrounds the muscles, of a yellow color, called fat. 
It is this which nourishes us for a feng, time napaoemcisadeese 
sick, and do not take much food. : aie 
The skin consists of three coats or membranes, the first. i is 
called the cuticle or epidermis, and has little pores, , but no 
veins or blood-vessels._ This skin continued, makes our finger- 
nails which protects the ends of the fingers, as the cuticle 
does the skin. Immediately underneath the cuticle is an- 
other layer called the rete mucosum. There is more feeling 
in this layer than in the first, Spread over this skin is what 
‘is called the coloring matter. It is a great mistake to sup- 
pose that because some have a black, and others white, and 
others red complexions, that the whole blood and skin are of 
ly _ difference bee the blackest 
person. who ever tat and the whites 
the surface of the second skin, which is either black, or white, 
or red. The third layer is called the vera cutis, or the true 
skin. Over this are little nervés, which run backwards.and ~ 
forwards in all directions, proceeding to the brain, and pro- 
duce all the pain or sensation we feel whens 
When the surgeon takes off a limb, it in cutting the 
bone—if the bone be in a healthy s we experience 
pain, but only when the third skin is cut; and it is for this — 
reason that it is called the true : 
