See about duns in my book ["Animals and Plants"], Volume I., page 55.

The extension of the mane and form of hoofs are grand new facts.

Is the hair of your horse at all curly?
for [an] observed case [is] given by me (Volume II., page 325) from Azara of correlation of forms of hoof with curly hairs.

See also in my book (Volume I., page 55; Volume II., page 41) how exceedingly rare stripes are on the faces of horses in England.
Give the age of your horse.
You are aware that Dr.Carpenter and others have tried to account for the effects of a first impregnation from the influence of the blood of the crossed embryo; but with physiologists who believe that the reproductive elements are actually formed by the reproductive glands, this view is inconsistent.

Pray look at what I have said in "Domestic Animals" (Volume I., pages 402-5) against this doctrine.