 By this form they become incomparably stronger and stifier, and give more room for the insertion of muscles, while they are lighter and therefore more agile ; and the same wisdom has made use of this hollow for other valuable purposes of the animal economy....  Practical Essays on Mill Work and Other Machinery - Page 331by Robertson Buchanan - 1823 - 588 pagesFull view - About this book
 | Robertson Buchanan - Mills and mill-work - 1814 - 178 pages
...made use of this hollow for other valuable purposes of the animal economy. In like manner the quilj&in the wings of birds acquire by their thinness the very...necessary, while they are so light as to give , sufficient buo}rancy to the animal, in the rare medium in which it must live and fly about. The stalks of many... | |
 | John Robison, James Watt - Astronomy - 1822 - 768 pages
...more room for the insertion of muscles, while they are lighter and therefore more agile ; and the same wisdom has made use of this hollow for other valuable...hollow, and thus possess an extraordinary strength. Our best engineers now begin to imitate nature by making many parts of their machines hollow, such... | |
 | John Robison, James Watt - Astronomy - 1822 - 770 pages
...muscles, while they are lighter and therefore more agile ; and the same wisdom has made use of this hollaw for other valuable purposes of the animal economy....hollow, and thus possess an extraordinary strength. Our best engineers now begin to imitate nature by making many parts of their machines hollow, such... | |
 | Thomas Dick - Education - 1833 - 458 pages
...are thinner than those of other animals, and the quills in their wings, acquire by their thinness the strength which is necessary, while they are so light as to give sufficient buoyancy to the animal in its flight through the aerial regions. Our engineers and carpenters have of late begun to imitate nature... | |
 | Thomas Dick - Philosophy and religion - 1838 - 690 pages
...are thinner than those of other animals, and the quills in their wings, acquire by their thinness the strength which is necessary, while they are so light as to give sutticient buoyancy to the animal in ils flight through the aerial regions. Our engineers and carpenters... | |
 | Charles Barlow - 1772 - 642 pages
...thinner than those of other animals, and the quills in their •wings, acquire by their thinness the strength which is necessary, while they are so light as to give sufficient buoyancy to the animal in its flight through the aerial regions. Our engineers and carpenters have, of late, begun to imitate... | |
 | Thomas Dick - Cosmology - 1850 - 684 pages
...are thinner than those of other animals, and the quills in their wings, acquire by their thinness the strength which is necessary, while they are so light as to give sufficient buoyancy to the animal in its flight through the aerial regions. Our engineers and carpenters have, of late, begun to imitate... | |
 | Thomas Dick - Astronomy - 1850 - 964 pages
...are thinner than those of other animals, and the quills in their wings, acquire by their thinness Ihe strength which is necessary, while they are so light as to give sufficient buoyancy to the animal in its flight through the aerial regions. Our engineers and carpenters have, of late, begun to imitate... | |
 | Thomas Dick - 1857 - 892 pages
...are thinner than those of other animals, and the quills in their wings, acquire by their thinness the strength which is necessary, while they are so light as to give sufficient buoyancy to the animal in its flight through the aerial regions. Our engineers and carpenters have, of late, begun to imitate... | |
 | Arthur Ashpitel - Architecture - 1867 - 442 pages
...more room for the insertion of muscles, while they are lighter and therefore more agile ; and the same wisdom has made use of this hollow for other valuable...hollow, and thus possess an extraordinary strength. Our best engineers now begin to imitate nature by making many parts of their machines hollow, such... | |
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