THOUGHTS FOR THE TIMES.
Human YYiuklfsS Thu rims
There are many human wireless thrills. For instance, when you tread on a stone, in a fraction of a second a nerve-thrill flashes from your foot to a centre in the spinal cord,, and a return thrill causes the muscles of tho leg to (Outmet, thereby jerking hack the foot. This is a nerve-message which travels at M remarkable speed. 11l the ofl.se of a frog the speed is up tci 90 feet a second in man it reaches about 400 feet a second. The greater part of the body is ruii by atitomntie action—that is, fietioil without eonsciotis elfoft and almost the whole body is connected up by automatic nervous machine fy, Even when n piece of dust blows agaiiist yolif eyeballs, one nerve sends a thrill to the centre in the brain, and in a fraction of a second lilessllge pomes hMc to the eyelid.-
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Hokitika Guardian, 17 July 1922, Page 2
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155THOUGHTS FOR THE TIMES. Hokitika Guardian, 17 July 1922, Page 2
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