Whether it is reasonable or ridiculous to trust to the alleged experiences of thieves as narrated by themselves, in prisons, or penitentiaries, or anywhere? In general, nothing more absurd. Lying is their habit and their trade; and they would rather lie - even if they hadn't an interest in it, and didn't want to make themselves agreeable - than tell the truth.

From these topics, we glide into a review of the most celebrated and horrible of the great crimes that have been committed within the last fifteen or twenty years. The men engaged in the discovery of almost all of them, and in the pursuit or apprehension of the murderers, are here, down to the very last instance. One of our guests gave chase to and boarded the emigrant ship, in which the murderess last hanged in London was supposed to have embarked. We learn from him that his errand was not announced to the passengers, who may have no idea of it to this hour. That he went below, with the captain, lamp in hand - it being dark, and the whole steerage abed and sea-sick - and engaged the Mrs. Manning who WAS on board, in a conversation about her luggage, until she was, with no small pains, induced to raise her head, and turn her face towards the light. Satisfied that she was not the object of his search, he quietly re-embarked in the Government steamer along-side, and steamed home again with the intelligence.

When we have exhausted these subjects, too, which occupy a considerable time in the discussion, two or three leave their chairs, whisper Sergeant Witchem, and resume their seat. Sergeant Witchem, leaning forward a little, and placing a hand on each of his legs, then modestly speaks as follows:

'My brother-officers wish me to relate a little account of my taking Tally-ho Thompson. A man oughtn't to tell what he has done himself; but still, as nobody was with me, and, consequently, as nobody but myself can tell it, I'll do it in the best way I can, if it should meet your approval.'

We assure Sergeant Witchem that he will oblige us very much, and we all compose ourselves to listen with great interest and attention.

'Tally-ho Thompson,' says Sergeant Witchem, after merely wetting his lips with his brandy-and-water, 'Tally-ho Thompson was a famous horse-stealer, couper, and magsman. Thompson, in conjunction with a pal that occasionally worked with him, gammoned a countryman out of a good round sum of money, under pretence of getting him a situation - the regular old dodge - and was afterwards in the "Hue and Cry" for a horse - a horse that he stole down in Hertfordshire. I had to look after Thompson, and I applied myself, of course, in the first instance, to discovering where he was. Now, Thompson's wife lived, along with a little daughter, at Chelsea. Knowing that Thompson was somewhere in the country, I watched the house - especially at post-time in the morning - thinking Thompson was pretty likely to write to her. Sure enough, one morning the postman comes up, and delivers a letter at Mrs. Thompson's door. Little girl opens the door, and takes it in. We're not always sure of postmen, though the people at the post-offices are always very obliging. A postman may help us, or he may not, - just as it happens. However, I go across the road, and I say to the postman, after he has left the letter, "Good morning! how are you?" "How are YOU!" says he. "You've just delivered a letter for Mrs. Thompson." "Yes, I have." "You didn't happen to remark what the post-mark was, perhaps?" "No," says he, "I didn't.