Old Sandstone—he was never known except by this nickname—had taught natural science at Dieppe College for the last twenty-five years. A geologist first and foremost and a geologist of real merit, he owed his by-name to his investigations of the sedimentary formations of the Norman coast, investigations which he had extended even to the bottom of the sea and which, though he was nearly sixty years of age, he was still continuing with unabated enthusiasm. Only last year, in the month of September, Simon had seen him, a big, heavy man, bloated with fat and crippled with rheumatism, struggling into a diver's dress and making, within sight of Saint-Valéry-en-Caux, his forty-eighth descent. The Channel from Le Havre to Dunkirk and from Portsmouth to Dover, no longer had any secrets for him.
"Are you going back to Dieppe presently, professor?"
"On the contrary, I have just come from Dieppe. I crossed last night, as soon as I heard of the wreck of the English fishing-smack, you know, between Seaford and Cuckmere Haven. I have already begun to make inquiries this morning, of some people who were visiting the Roman camp and saw the thing happen."
"Well?" said Simon, eagerly.
"Well, they saw, at a mile from the coast, a whirl of waves and foam revolving at a dizzy speed round a hollow centre. Then suddenly a column of water gushed straight up, mixed with sand and stones, and fell back on all sides, like a rain of rockets. It was magnificent!"
"The fishing-smack?" echoed Old Sandstone, who seemed not to understand, to take no interest in this trivial detail. "Oh, yes, the fishing-smack, of course! Well, she disappeared, that's all!"
The young man was silent, but the next moment continued:
"Now my dear professor, tell me frankly, do you think there's any danger in crossing?"
"Oh, that's absurd! It's as though you were to ask me whether one ought to shut one's self in one's room when there is a thunder-storm. Of course the lightning strikes the earth now and again. But there's plenty of margin all round. . . . Besides, aren't you a good swimmer? Well, at the least sign of danger, dive into the sea without delay: don't stop to think; just dive!"