Paula smiled, and said, 'No, of course not.'
Somerset, feeling himself superfluous, raised his hat to his companions as if he meant not to see them again for a while, and began to descend by some steps cut in the earth; Miss De Stancy asked Mrs. Goodman to accompany her to a barrow over the top of the tunnel; and they left the carriage, Paula remaining alone.
Down Somerset plunged through the long grass, bushes, late summer flowers, moths, and caterpillars, vexed with himself that he had come there, since Paula was so inscrutable, and humming the notes of some song he did not know. The tunnel that had seemed so small from the surface was a vast archway when he reached its mouth, which emitted, as a contrast to the sultry heat on the slopes of the cutting, a cool breeze, that had travelled a mile underground from the other end. Far away in the darkness of this silent subterranean corridor he could see that other end as a mere speck of light.
When he had conscientiously admired the construction of the massive archivault, and the majesty of its nude ungarnished walls, he looked up the slope at the carriage; it was so small to the eye that it might have been made for a performance by canaries; Paula's face being still smaller, as she leaned back in her seat, idly looking down at him. There seemed something roguish in her attitude of criticism, and to be no longer the subject of her contemplation he entered the tunnel out of her sight.
In the middle of the speck of light before him appeared a speck of black; and then a shrill whistle, dulled by millions of tons of earth, reached his ears from thence. It was what he had been on his guard against all the time,--a passing train; and instead of taking the trouble to come out of the tunnel he stepped into a recess, till the train had rattled past and vanished onward round a curve.
Somerset still remained where he had placed himself, mentally balancing science against art, the grandeur of this fine piece of construction against that of the castle, and thinking whether Paula's father had not, after all, the best of it, when all at once he saw Paula's form confronting him at the entrance of the tunnel. He instantly went forward into the light; to his surprise she was as pale as a lily.
'O, Mr. Somerset!' she exclaimed. 'You ought not to frighten me so--indeed you ought not! The train came out almost as soon as you had gone in, and as you did not return--an accident was possible!'