COLEMAN, Justice. Defendants appeal from judgment for plaintiffs in action for breach of duty to warn plaintiffs of the dangerous
character of a substance allegedly manufactured by one defendant and sold to plaintiffs by the other defendant. We discuss
this allegation below in detail. Stated generally, plaintiffs allege that one defendant manufactured and placed on the market a dangerous substance, i. e.,
a vine killer; that the other defendant sold the substance to plaintiffs; that defendants knew of the dangerous quality of
the substance but failed to warn plaintiffs; that plaintiffs used the substance by spraying it on their potato crop to kill
the vines; that some of the substance drifted out of the potato field onto grass in plaintiffs' adjacent pasture; and that
plaintiffs' cattle ate the grass, were thereby poisoned, and died.