THE FOUR-HORNED SHEEP. 
Ovis ARIES. Var. POLYCERATA. 
One of the most curious modifications produced by 
cultivation in the domesticated Sheep consists in the 
augmentation of the number of its hors; two, three, 
or even four supplementary appendages of this descrip- 
tion being occasionally produced in addition to the 
normal number. Under these circumstances the addi- 
tional horns usually occupy the upper and fore part of 
the head, and are of a more slender shape and take a 
more upright direction than the others, thus approach- 
ing in character to those of the Goats, while the true 
horns retain more or less of the spiral curve that dis- 
tinguishes those of the Sheep. There exists a strong 
tendency to the hereditary propagation of this monstro- 
sity, which is extremely frequent in the Asiatic races, 
