y, either the male or the female parent_ may give _either
series of organs_ as above arranged--that is _either_ forehead and
organs of sense, together with the vital and nutritive organs, _or_
back head, together with the locomotive organs."

To show that among domesticated animals organization is transmitted by
halves in the way indicated, and that either parent may give either
series of organs, he cites among other instances the account of the
Ancon sheep. "When both parents are of the Ancon or Otter breed, their
descendants inherit their peculiar appearance and proportions of form.
When an Ancon ewe is impregnated by a common ram, the progeny
resembles wholly either the ewe or the ram. The progeny of a common
ewe impregnated by an Ancon ram follows entirely in shape the one or
the other without blending any of the distinguishing and essential
peculiarities of both.

'Frequent instances have occurred where common ewes have had twins by
Ancon rams; when one exhibited the complete marks and features of the
ewe and the other of the ram. The contrast has been rendered
singularly striking when one short legged and one long legged lamb
produced at a birth have been sucking the dam at the same time.'

As the short and crooked legs or those of opposite form, here indicate
the parent giving the locomotive system, it is evident that one of
the twins derived it from one parent and the other twin from the other
parent;--the parent not giving it, doubtless communicating in each
case, the vital or nutritive system."

Where the parents are of different varieties or species, Mr. Walker
says, "The second law, namely, that of CROSSING, operates where each
parent is of a _different breed_, and where, supposing both to be of
equal age and vigor the _male_ gives the _back head_ and _locomotive
organs_, and the _female_ the _face_ and _nutritive organs_."

After giving numerous illustrations from facts and many quotations
from eminent breeders, he says, "thus, in crosses of cattle as well as
of horses, the male, except where feebler or of inferior voluntary and
locomotive power, gives the locomotive system, the female the vital
one."

W.C. Spooner, V.S., one of the most eminent authorities of the present
day on this subject, and writing within the past year in the Journal
of the Royal Agricultural Society, says:--"The most probable
supposition is, that propagation is done by halves, each parent giving
to the offspring the shape of o