Now, I have already said that I was devoted to zoology. Of all branches of zoology, the study of insects was the most attractive to me, and of all insects beetles were the species with which I was most familiar. Butterfly collectors are numerous, but beetles are far more varied, and more accessible in these islands than are butterflies. It was this fact which had attracted my attention to them, and I had myself made a collection which numbered some hundred varieties. As to the other requisites of the advertisement, I knew that my nerves could be depended upon, and I had won the weight-throwing competition at the inter-hospital sports. Clearly, I was the very man for the vacancy. Within five minutes of my having read the advertisement I was in a cab and on my way to Brook Street. As I drove, I kept turning the matter over in my head and trying to make a guess as to what sort of employment it could be which needed such curious qualifications. A strong physique, a resolute nature, a medical training, and a knowledge of beetles—what connection could there be between these various requisites? And then there was the disheartening fact that the situation was not a permanent one, but terminable from day to day, according to the terms of the advertisement. The more I pondered over it the more unintelligible did it become; but at the end of my meditations I always came back to the ground fact that, come what might, I had nothing to lose, that I was completely at the end of my resources, and that I was ready for any adventure, however desperate, which would put a few honest sovereigns into my pocket. The man fears to fail who has to pay for his failure, but there was no penalty which Fortune could exact from me. I was like the gambler with empty pockets, who is still allowed to try his luck with the others. No. 77B, Brook Street, was one of those dingy and yet imposing houses, dun-coloured and flat-faced, with the intensely respectable and solid air which marks the Georgian builder. As I alighted from the cab, a young man came out of the door and walked swiftly down the street. In passing me, I noticed that he cast an inquisitive and somewhat malevolent glance at me, and I took the incident as a good omen, for his appearance was that of a rejected candidate, and if he resented my application it meant that the vacancy was not yet filled up. Full of hope, I ascended the broad steps and rapped with the heavy knocker. A footman in powder and livery opened the door. Clearly I was in touch with people of wealth and fashion. “Yes, sir?” said the footman. “I came in answer to——” “Quite so, sir,” said the footman. “Lord Linchmere will see you at once in the library.”