Assertion: sexual selection | /r/CapableOf | give length of spur
Facets:
value: surely
type: MANNER
Source sentences:
text: Sexual selection, by always allowing the victor to breed, might surely give indomitable courage, length of spur, and strength to the wing to strike in the spurred leg, in nearly the same manner as does the brutal cockfighter by the careful selection of his best cocks.