_May 17th, Monday_.--Unquestionably, the appointment of Middleton as minister to one of the minor Continental courts must take place in the interval between Eldredge's meeting him in the park, and his inviting him to his house. After Middleton's appointment, the two encounter each other at the Mayor's dinner in St. Mary's Hall, and Eldredge, startled at meeting the vagrant, as he deemed him, under such a character, remembers the hints of some secret knowledge of the family history, which Middleton had thrown out. He endeavors, both in person and by the priest, to make out what Middleton really is, and what he knows, and what he intends; but Middleton is on his guard, yet cannot help arousing Eldredge's suspicions that he has views upon the estate and title. It is possible, too, that Middleton may have come to the knowledge--may have had some knowledge--of some shameful or criminal fact connected with Mr. Eldredge's life on the Continent; the old Hospitaller, possibly, may have told him this, from some secret malignity hereafter to be accounted for. Supposing Eldredge to attempt his murder, by poison for instance, bringing back into modern life his old hereditary Italian plots; and into English life a sort of crime which does not belong to it,--which did not, at least, although at this very period there have been fresh and numerous instances of it. There might be a scene in which Middleton and Eldredge come to a fierce and bitter explanation; for in Eldredge's character there must be the English surly boldness as well as the Italian subtlety; and here, Middleton shall tell him what he knows of his past character and life, and also what he knows of his own hereditary claims. Eldredge might have committed a murder in Italy; might have been a patriot, and betrayed his friends to death for a bribe, bearing another name than his own in Italy; indeed, he might have joined them only as an informer. All this he had tried to sink, when he came to England in the character of a gentleman of ancient name and large estate. But this infamy of his previous character must be foreboded from the first by the manner in which Eldredge is introduced; and it must make his evil designs on Middleton appear natural and probable. It may be, that Middleton has learned Eldredge's previous character, through some Italian patriot who had taken refuge in America, and there become intimate with him; and it should be a piece of secret history, not known to the world in general, so that Middleton might seem to Eldredge the sole depositary of the secret then in England. He feels a necessity of getting rid of him; and thenceforth Middleton's path lies always among pitfalls; indeed, the first attempt should follow promptly and immediately on his rupture with Eldredge. The utmost pains must be taken with this incident to give it an air of reality; or else it must be quite removed out of the sphere of reality by an intensified atmosphere of romance.