Read it through once

I am bringing some nightingales, too, and some cue-owls. I got them in Italy. The song of the nightingale is the deadliest known to ornithology. That demoniacal shriek can kill at thirty yards. The note of the cue-owl is infinitely soft and sweet—soft and sweet as the whisper of a flute. But penetrating—oh, beyond belief; it can bore through boiler-iron. It is a lingering note, and comes in triplets, on the one unchanging key: hoo-o-o, hoo-o-o, hoo-o-o; then a silence of fifteen seconds, then the triplet again; and so on, all night. At first it is divine; then less so; then trying; then distressing; then excruciating; then agonizing, and at the end of two hours the listener is a maniac.