he presently exerted his utmost agility, and with surprizing expedition ascended the hill.

Obviously the best engines to use for comparison would be those of greatest total (flight plus test) operating time -- the so-called fleet leaders.

VVhy didſt thou promiſe ſuch a beautious day, And make me trauaile forth without my cloake, To let bace cloudes ore-take me in my way, Hiding thy brau'ry in their rotten ſmoke.

One she saw clearly—a dewy-eyed, lovely woman who murmured loving, broken words.