Gems of Chinese Literature/Su Tung-P‘o-Inaccuracy
It is stated in the ancient work on Water-courses that at a certain place there was a “stone-bell hill.” The commentator, Li Yüan, considers the name to have arisen from the fact that the foot of the hill is washed by a deep pool, and that on the slightest agitation of its surface by the wind, waves would splash against the rock and produce a sound like that of a great bell.
This explanation, long regarded with suspicion, was at length exploded by a real bell being placed in the pool, which, no matter how violent the waves, never gave forth a sound. How much less then, it was argued, would stone.
By-and-by, an official, named Li Pŏ, set to work to investigate, and discovered at the pool two stones which when struck emitted ringing sounds of different pitches, the vibration continuing some time after the stroke, and at length dying gradually away. Thus be believed that he had finally settled the point.
Of this settlement, however, I always entertained grave doubts. For many stones will yield a ringing sound when struck; why then should these be more particularly bell stones than any others?
Subsequently, I had an opportunity of seeing for myself these so-called stone bells, when accompanying my eldest son on the way to his post as magistrate. The priests of a neighbouring temple bade one of their novices carry an adze, and with this he chipped off several pieces and showed me how they rang when struck. I smiled, but was not convinced; and that same night, the moon shining brightly, I stepped into a boat with my son and we proceeded to the base of the hill where the rock rose almost sheer to a height of near a thousand feet, looking like a fierce beast or huge hobgoblin about to spring upon us. Flocks of birds, startled at our approach, flew out and whirled away into the sky. There were also sounds as of old men coughing and laughing within a chasm of the rock, which one would have said was the noise of herons or cranes.
Much affected by the scene, I was about to leave, when suddenly over the face of the water came clanging and rolling sounds, like the notes of bells and drums. The boatman was horribly alarmed; but on examination we found that the base of the rock was pitted all over with holes, of I know not what depth, and that the sounds were due to the water which had been forced up them rushing noisily out as each wave retired. And steering our boat into a chasm between two rocks, we there found a large boulder of a size to seat a hundred persons, right in mid-channel. This too was full of holes, and when these had been filled with water driven in by the wind, the water would flow out with a noise similar to that we had just heard.
Laughing, I turned to my son and said, “Don’t you see? These sounds are identical in timbre with the notes of the two famous bells of old. Ah! the ancients deceive us not. But how should people undertake to decide about what they have neither seen with their eyes nor heard with their ears? Li Yüan was a man of experience equal to my own. Yet his explanation was inaccurate. He doubtless would not be bothered to get into a boat and anchor here at night beneath the cliff. Therefore he could not ascertain the real cause of the phenomenon, while the boatmen and others, who may have known, had no means of publishing the truth. Li Pŏ put his trust in an adze, and thought he had solved the problem thereby.”
I accordingly made a note of this adventure, with a sigh for the remissness of Li Yüan, and a smile at the credulity of Li Pŏ.