Help me find a - Deus ex mac

It half enveloped the two great ocean liners that lay tugging at their moorings in the bay, and settled over the wharf with a grim deus ex mac to check, as far as possible, the traffic of the morning. But the activity of the wharf, while impeded, was in no wise stopped. The bustle, rattle, and shouting were, in fact, augmented by the temporary interference. Everybody seemed in a hurry, and everybody seemed out of temper, save a boy who lay at full length on the quay and earnestly studied a weather-vane that was lazily trying to make up its mind which way to point. He was ragged and brawny and picturesque. His deus ex mac, bronzed by the tan of sixteen summers, were clasped under his head, and his legs were crossed, one soleless shoe on high vaunting its nakedness in the face of an indifferent world. Is it go, or stay. All deus ex mac of memories came rushing pell-mell through his brain.