quinary age group.
The mischief caused by this theory of a Quinary System was very great, but was chiefly confined to Britain, for (as has been will be necessary to limit this survey, as before indicated, to those countries alone which form the homes of English people, or are commonly visited by them in ordinary travel.
The success it gained was doubtless due in some degree to the difficulty which most men had in comprehending it, for it was enwrapped in alluring mystery, but more to the confidence with which it was announced as being the long-looked-for key to the wonders of creation, since its promoters did not hesitate to term it the discovery of " the Natural System," though they condescended, by way of explanation to less exalted intellects than their own, to allow it the more moderate appellation of the Circular or, Quinary System.
(ii) Beyond ten, and in many cases beyond five, the names have reference to the use of the fingers, and sometimes of the toes, for counting; and the scale may be quinary, denary or vigesimal, according as one hand, the pair of hands, or the hands and feet, are taken as the new unit.
But, confining ourselves to what is here our special business, it is to be remarked that perhaps the heaviest blow dealt at these strange doctrines was that delivered by Rennie, who, in an edition of Montagu's Ornithological Dictionary (pp. xxxiii.-1v.), published in 1831 and again issued in 1833, attacked the Quinary System, and especially its application to ornithology by Vigors and Swainson, in a way that might perhaps have demolished it, had not the author mingled with his undoubtedly sound reason much that is foreign to any question with which a naturalist, as such, ought to deal - though that herein he was only following the example of one of his opponents, who had constantly treated the subject in like manner, is to be allowed.
This did not hinder Swainson, who had succeeded in getting the ornithological portion of the first zoological work ever published at the expense of the British government (namely, the Fauna BorealiAmericana) executed in accordance with his own opinions, from maintaining them more strongly than ever in several of the volumes treating of Natural History which he contributed to the Cabinet Cyclopaedia - among others that from which we have just given some extracts - and in what may be deemed the culmination in England of the Quinary System, the volume of the " Naturalist's Library " on The Natural Arrangement and History of Flycatchers, published in 1838, of which unhappy performance mention has already been made in this present work (vol.
though attempts were now and then made by its adherents to revive it; and, even ten years or more later, Kaup, one of the few foreign ornithologists who had embraced Quinary principles, was by mistaken kindness allowed to publish Monographs of the Birds-of-Prey (Jardine's Contributions to Ornithology, 18 49, pp. 68 -75, 96-121; 1850, pp. 51-80; 1851, pp. 119-130; 1852, pp. 103-122; and Trans.
ONS publishes detailed national population estimates by sex and single year of age, and local estimates by sex and quinary age group.
It may be convenient here to deal with the theory of the Quinary System, which was promulgated with great zeal by its upholders during the end of the first and early part of the second quarter of the 19th century, and for some years seemed likely to carry all before it.
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