2 adjectives to describe tocsins

Their small navy can hardly find them enough work to keep their "hands in;" but doubtless the first knell of the accursed tocsin of war, while it gave them enough to do, would soon fill their dockyards with able and willing hands to do it.

The conspirators had got possession of all the churches; and as the hour of midnight struck, a single cannon-shot gave the signal, and from every steeple and tower in the city the fatal tocsin began to peal.

2 adjectives to describe  tocsins