 | Periodicals - 1838 - 274 pages
...seventy, or for a period of half a century, the number of movements would be 751,200,000 times ! Now this continued rubbing of the bones of the knee together,...if they would last even a whole day. Iron or steel would wear out in a very short time. What, then, can be the reason why the knees and all the other... | |
 | Periodicals - 1838 - 272 pages
...seventy, or for a period of half a century, the number of movements would be 751,200,000 times ! Now this continued rubbing of the bones of the knee together,...if they would last even a whole day. Iron or steel would wear out in a very short time. What, then, can be the reason why the knees and all the other... | |
 | Children's periodicals - 1834 - 476 pages
...and it means dropping of water, " will wear away a rock." And the saying, though old, is true. Why, this continued rubbing of the bones of the knee together,...time. What, then, can be the reason why the knees, and all the other joints, do not wear out ? There is no place to put in tar or oil, to prevent it. I have... | |
 | House - Physiology - 1869 - 210 pages
...said, and it means dropping of water, ' will wear away a rock.' And the saying, though old, is true. This continued rubbing of the bones of the knee together,...even a whole day. Iron or steel, or even the hardest material you can think of, would wear out in a very short time. What, then, can be the reason why the... | |
 | Parish helper - 1873 - 104 pages
...the knee would wear out so quickly with a single day's exertion that we should be startled by hearing a grating noise at every step long before night, and in a few days the bones would be worn out and rendered unfit for use. The liquid that oozes out to lubricate... | |
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Why, this continued rubbing of the bones of the knee together, if they were allowed to get dry, would wear them so much in a single day, that we should hear a grating noise at every step, long before night. And in a very few days the bones would be completely... 