 | William Bingley - Animal behavior - 1803 - 606 pages
...Montagu*—— Sew. Birds, p. %i5inclining its tail against the wall, making that a fulcrum ; and thus fixed, it, works and plasters the materials into the face...But then, that this work may not, while it is soft, pull itself down by its own weight, the provident architect has prudence and forbearance enough not... | |
 | Zoology - 1829 - 494 pages
...so as to carry safely the'superstructure. On this occasion, the bird not only clings with its claws, but partly supports itself by strongly inclining its...against the wall, making that a fulcrum ; and, thus fixed, it plasters the materials into the face of the brick or stone. But that this work may not, while... | |
 | William Bingley - 1829 - 392 pages
...so as to carry safely the superstructure. On this occasion the bird not only clings with its claws, but partly supports itself by strongly inclining its...against the wall, making that a fulcrum ; and, thus fixed, it plasters the materials into the face of the brick or stone. But that this work may not, while... | |
 | Edinburgh encyclopaedia - 1830 - 828 pages
...claw*, but partly supports itself by strongly inclining its ta;, against the wall, and, thus fixed, it plasters the materials into the face of the brick or stone. But that this piece of workmanship may not, when soft, incline down by its own weight, the provident architect... | |
 | Books - 1831 - 652 pages
...it may safely carry the superstructure. On this occasion, the bird not only clings with its claws, but partly supports itself by strongly inclining its...that this work may not, while it is soft and green, put itself down by its own weight, the provident architect has prudence and forbearance enough not... | |
 | Mary Roberts - Gloucestershire (England) - 1831 - 388 pages
...claws,butpartly supports himself by inclining his tail as a fulcrum against the wall, and when thus steadied, he works and plasters the materials into the face of the brick, or stone. But then, lest the structure should fall down by its own weight, the provident architect prudently resolves not... | |
 | Civilization - 1832 - 406 pages
...it may safely carry the superstructure. On this occasion, the bird not only clings with its claws, but partly supports itself by strongly inclining'...materials into the face of the brick or stone. But then, thai this work may not, while it is soft and green, pull itself down by its own weight, the provident... | |
 | John Timbs - 1832 - 356 pages
...house-martins build their nests only in the morning ? Because the work of the nest, chiefly of dirt or loam, may not, while it is soft and green, pull itself down by its own weight, but have sufficient time to harden and dry. — G. White. Why do martins usually build to a north-east... | |
 | John Timbs - 1832 - 442 pages
...house-martins build their nests only in the morning ? Because the work of the nest, chiefly of dirt or loam, may not, while it is soft and green, pull itself down by its own weight, but have sufficient time to harden and dry. ' — G. White. Why do martins usually build to a north-east... | |
 | Gilbert White - Natural history - 1833 - 410 pages
...that it may safely carry the superstructure. On this occasion the bird not only clings with its claws, but partly supports itself by strongly inclining its...this work may not, while it is soft and green, pull itself-do\vn by its own weight, the provident architect has prudence and forbearance enough not to... | |
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As this bird often builds against a perpendicular wall without any projecting ledge under, it requires its utmost efforts to get the first foundation firmly fixed, so that it may safely carry the superstructure. On this occasion the bird not only clings... 
