(Here should any young lady incline to imitate Gwendolen, let her consider the set of her head and neck: if the angle there had been different, the chin protrusive, and the cervical vertebrae a trifle more curved in their position, ten to one Gwendolen's words would have had a jar in them for the sweet-natured Rex. 
(If Gwendolen had been any less attractive, ten to one her words would have jarred on the sweet-natured Rex. 