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in these two cases, and in some but not in all other cases, an almost perfect series 1866 1869
an almost perfect series 1859 1860 1861
OMIT 1872

extremes of structure. 1859 1860 1861 1866 1869
and the rock pigeon, an almost perfect series; so we can in some other cases, but not with all the breeds. 1872

for 1859 1860 1861 1866 1869
are in each eminently variable, for 1872

are in each breed eminently variable; 1859 1860 1861 1866 1869
OMIT 1872

characters from the rock-pigeon, yet
that, by
by
comparing the several sub-breeds of these
breeds,
two races,
varieties,
more especially those brought from distant countries, we can
make,
make
in these two cases, and in some but not in all other cases, an almost perfect series between
them
the
extremes of structure. Thirdly, those characters which are mainly distinctive of each
breed
breed,
for instance the wattle and length of beak of the carrier, the shortness of that of the tumbler, and the number of tail-feathers in the
fantail;
fantail,
are in each breed eminently variable; and the explanation of this fact will be obvious when we
come to
come to
treat of
selection.
Selection.
Fourthly, pigeons have been
watched,
watched
and tended with the utmost care, and loved by many people. They have been domesticated for thousands of years in several quarters of the world; the earliest known record of pigeons is in the fifth
ægyptian
Ægyptian
dynasty, about 3000 B.C., as was pointed out to me by Professor Lepsius; but Mr. Birch informs me that pigeons are given in a bill of fare in the previous dynasty. In the time of the Romans, as we hear from Pliny, immense prices were given for pigeons; "nay, they are come to this pass, that they can reckon up their pedigree and race." Pigeons were much valued by Akber Khan in India, about the year 1600; never less than 20,000 pigeons were taken with the court. "The monarchs of Iran and Turan sent him some very rare
birds";
birds;"
and, continues the courtly historian, "His Majesty by crossing the breeds, which method was never practised before, has improved them astonishingly." About this same period the Dutch were as eager about pigeons as were the old Romans. The paramount importance of these considerations in explaining the immense amount of variation which pigeons have undergone, will
likewise be
be
obvious when we treat of Selection. We shall then, also, see how it is that the
breeds
several breeds