 ... as the pigeon grows older, the proportion of common food is increased ; so that by the time it is seven, eight, or nine days old, the secretion of the curd ceases in the old ones, and of course no more will be found in the crop of the young.  Our Domestic Fowls - الصفحة 117بواسطة William Charles L. Martin - 1799 - عدد الصفحات: 16عرض كامل - لمحة عن هذا الكتاب
 | William Bingley - 1829 - عدد الصفحات: 392
...eight, or nine days old, the secretion of the curd ceases in the old ones, and of course no more is found in the crop of the young. It is a curious fact, that the parent pigeon has, at first, power to throw up this curd without any mixture of common food ; although, afterwards, both are thrown... | |
 | James Rennie - 1833 - عدد الصفحات: 422
...food is increased ; so that by the time it is seven, eight, or nine days old, the secretion of the curd ceases in the old ones, and of course no more...throw up this curd without any mixture of common food, although afterwards both are thrown up according to the proportion required for the young ones. I have... | |
 | James Rennie - 1833 - عدد الصفحات: 406
...food is increased ; so that by the time it is seven, eight, or nine days old, the secretion of the curd ceases in the old ones, and of course no more...throw up this curd without any mixture of common food, although afterwards both are thrown up according to the proportion required for the young ones. I have... | |
 | Edward Jesse - 1835 - عدد الصفحات: 352
...common food is increased, so that by the time it is seven, eight, or nine days old, the secretion of the curd ceases in the old ones, and of course no more...curious fact, that the parent pigeon has at first a power to throw up this, and without any mixture of common food, although afterwards both are thrown... | |
 | Royal College of Surgeons of England. Museum - 1840 - عدد الصفحات: 376
...common food is increased, so that by the time it is seven, eight, or nine days old, the secretion of the curd ceases in the old ones, and of course no more...curious fact, that the parent pigeon has at first a power to throw up this curd without any mixture of common food, although afterwards both are thrown... | |
 | William John Broderip - 1852 - عدد الصفحات: 446
...common food is increased; so that by the time it is seven, eight, or nine days old, the secretion of the curd ceases in the old ones, and of course no more...curious fact, that the parent pigeon has at first a power to throw up this curd without any mixture of common food, although, afterwards, both are thrown... | |
 | Cassell, ltd - 1859 - عدد الصفحات: 830
...by the time it is seven, eight, or nine days old, the secretion of the curd ceases in the old ones. It is a curious fact that the parent pigeon has at...throw up this curd without any mixture of common food, although afterwards both are thrown up according to the proportion required for the young ones. I have... | |
 | Cassell, ltd - 1863 - عدد الصفحات: 848
...by the time it is seven, eight, or nine days old, the secretion of the curd ceases in the old ones. It is a curious fact that the parent pigeon has at first tlio po\vcr to throw up this curd without any mixture of common food, although afterwards both are... | |
 | William Bernhard Tegetmeier - 1868 - عدد الصفحات: 234
...common food is increased ; so that it is seven, eight, or nine days old, before the secretion of the curd ceases in the old ones, and of course no more will be found in the crop of the young ones. " I have called this substance curd, not being literally so, but resembling that more than anything... | |
 | 1869 - عدد الصفحات: 392
...by the time it is seven, eight, or nine days old, the secretion of the curd ceases in the old bird, and of course no more will be found in the crop of...curious fact, that the parent pigeon has, at first, a power to throw up this curd without any mixture of common food, although, afterwards, both are thrown... | |
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