 ... 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 - עמוד 117מאת William Charles L. Martin - 1799 - 16 דפיםתצוגה מלאה - מידע על ספר זה
 | William Bingley - 1829 - 392 דפים
...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 - 422 דפים
...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 - 406 דפים
...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 - 352 דפים
...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 - 376 דפים
...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 - 446 דפים
...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 - 830 דפים
...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 - 848 דפים
...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 - 234 דפים
...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 - 392 דפים
...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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