We are willing to bestow on Mr. Thomas all the credit which he deserves for his meritorious exertions in bringing the miscreants to the bar of their country to answer for their crimes; but we cannot refrain from observing, that in collecting the evidence for the prosecution, recourse has been had to some measures which appear highly overstrained, and which, in fact, could never be received as evidence in any English court of justice. We will select the following as an instance.

Mr. Duchoz having informed the jury that the neck of the boy appeared to be dislocated in the same manner as it is usual to wring the neck of a duck, Mr. Thomas proceeded to state, that in consequence of a communication which he received on Saturday afternoon from the King's College, he sent officers to that place to take the four men into custody, which was done, after a desperate resistance had been made by the prisoners. Witness sent for the body, and asked Bishop what he was. He replied, "A b——y body-snatcher." He had seen the four prisoners within the last fifteen minutes, and asked them if they had any wish to see the jury. May replied, "Not I—I have nothing to say about it." Bishop said, "The body is mine; and if you want to know how I got it, you may find it out if you can." Shields' answer was, that he was employed by Bishop to carry the body from Guy's Hospital to the King's College. The prisoner Williams said, that he knew nothing at all about the matter, and that he merely went with the prisoners to see the King's College. Mr. Thomas added, that he received a letter that afternoon, stating that a tortoise, similar to the one which it is supposed the deceased was in the habit of carrying about, was exhibited for sale in a shop in Middle Row, Holborn. He immediately went to the shop, and took possession of the tortoise now produced, (for which act Mr. Thomas rendered himself liable to an action for felony). He asked the woman of the shop how she became possessed of it; and she answered, that her husband had purchased it in Leadenhall Market, of a person whom she did not know; adding, that such things were usually bought and sold there.

Joseph Perrigalli, husband of the woman already examined, was then sworn, and stated, that he had known the deceased boy for nearly twelve months, and well recollected his having carried a tortoise with him. The tortoise, which he was in the habit of carrying, was very like the one now produced; and he, witness, saw it in the possession of the deceased about a month ago. The deceased used to carry mice as well. He examined the body last Sunday morning, and was quite certain it was the boy whom he knew so well.

Now, would the evidence of the tortoise have been admitted in any court of justice whatever? It was well known that the Italian boy carried a tortoise; Mr. Thomas hears of a tortoise being in Middle Row, Holborn—hurries to take possession of it—produces it before the jury—and calls a Frenchman to depose that it is very like the tortoise which the Italian boy carried about with him. We believe that all tortoises are alike, and that it would not be so easy to prove the identity of any individual of the species, as has been evinced in the proof of the identity of Carlo Ferrari. If Mr. Thomas had received a letter, stating that a tortoise was in either of the two great Zoological Gardens, and it is just as probable that the tortoise of Carlo Ferrari should have fallen into the possession of the proprietors of those establishments, as into that of the woman in Middle Row,—would Mr. Thomas have so far committed himself, as to repair to the Gardens, and bring the animal away with him? It is by no means an uncommon thing to see a tortoise exposed for sale in Leadenhall Market, and Mr. Thomas had it not in his power to produce an iota of proof, that the tortoise which the woman purchased in that market, was the identical one of Carlo Ferrari, but simply that it was very like it. It is true, that the configurations of the shell of the tortoise are not always similar; but on that point no proof is produced that the tortoise of Carlo Ferrari, and of the woman in Middle Row, resembled each other; and, therefore, we cannot forbear expressing our regret, that any recourse should have been had to such a flimsy evidence, and which would have been immediately rejected by the judge appointed to try the criminals.

Mr. Thomas, in continuation of the statement, said, that since the deceased had been brought to the Station House, he had had no less than eight applications to see the body by parents, who had, within a very short space of time, lost their sons, who were generally described as boys about the age of thirteen or fourteen. The parents could in no way account for their absence, and they all appeared in the greatest distress of mind. One of the boys so lost was deaf and dumb.

The coroner and the jury expressed their greatest surprise at the statement, and Mr. Cribb, the foreman of the jury, observed, that he had no doubt whatever of the fact, for he had himself seen the parents of two boys who had disappeared, call at the Station House on Sunday morning, in order to see the body of the deceased.

A juryman said, that the fact stated by Mr. Thomas afforded the strongest possible reason for pursuing the present inquiry to the utmost.

After some further conversation, the jury wished the room to be cleared, in order, we believe, to discuss the propriety, either of adjourning the inquest, with a view to obtain further evidence, or to call the parties charged before them, in order to hear any further explanation touching their possession of the body, which they might feel inclined to give.

The room was accordingly cleared at seven o'clock, and after remaining together about twenty minutes, it was announced that the inquest was adjourned until five o'clock on Thursday evening next.

Mr. Corder, the vestry clerk of St. Paul's, Covent Garden, was present, and took notes of the proceedings on behalf of the parish, who, in the event of the case being sent for trial to the Old Bailey, will become the prosecutors.