common wild species. But from what we hear of the marvellous success in
France in rearing hybrids between the hare and rabbit (4/7. See Dr. P.
Broca's interesting memoir on this subject in Brown-Sequard 'Journ. de.
Phys.' volume 2 page 367.), it is possible, though not probable, from the
great difficulty in making the first cross, that some of the larger races,
which are coloured like the hare, may have been modified by crosses with
this animal. Nevertheless, the chief differences in the skeletons of the
several domestic breeds cannot, as we shall presently see, have been
derived from a cross with the hare.

There are many breeds which transmit their characters more or less truly.
Every one has seen the enormous lop-eared rabbits exhibited at our shows;
various allied sub-breeds are reared on the Continent, such as the so-
called Andalusian, which is said to have a large head with a round
forehead, and to attain a greater size than any other kind; another large
Paris breed is named the Rouennais, and has a square head; the so-called
Patagonian rabbit has remarkably short ears and a large round head.
Although I have not seen all these breeds, I feel some doubt about there
being any marked difference in the shape of their skulls. (4/8. The skulls
of these breeds are briefly described in the 'Journal of Horticulture' May
7, 1861 page 108.) English lop-eared rabbits often weigh 8 pounds or 10
pounds, and one has been exhibited weighing 18 pounds; whereas a full-sized
wild rabbit weighs only about 3 1/4 pounds. The head or skull in all the
large lop-eared rabbits examined by me is much longer relatively to its
breadth than in the wild rabbit. Many of them have loose transverse folds
of skin or dewlaps beneath the throat, which can be pulled out so as to
reach nearly to the ends of the jaws. Their ears are prodigiously
developed, and hang down on each side of their faces. A rabbit was
exhibited in 1867 with its two ears, measured from the tip of one to the
tip of the other, 22 inches in length, and each ear 5 3/8 inches in