Mr. Madgin left home by an early train on the morning of the day following that on which Lady Pollexfen had received a reply from Sir John Pennythorne. His first intention had been to make the best of his way to Windermere, and there ascertain the exact locality of Bon Repos. But a fresh view of the case presented itself to his mind as he lay thinking in bed. Instead of taking the train for the north, he took one for the south, and found himself at Euston as the London clocks were striking twelve. After an early dinner, and a careful consultation of the Post Office Directory, Mr. Madgin ordered a hansom, and was driven to Hatton-garden, in and about which unfragrant locality the diamond merchants most do congregate. After due inquiries made and answered, Mr. Madgin was driven eastward for another mile or more. Here a similar set of inquiries elicited a similar set of answers. Mr. Madgin went back to his hotel well pleased with his day's work. His inquiries had satisfied him that no green diamond of the size and value attributed to the Great Mogul had either been seen or heard of in the London market during the last twenty years. It still remained to test the foreign markets in the same way. Mr. Madgin's idea was that this work could be done better by some trustworthy agent well acquainted with the trade than by himself. He accordingly left instructions with an eminent diamond merchant to have all needful inquiries made at Paris, Amsterdam, and St. Petersburgh, as to whether such a stone as the Great Mogul had come under the cognizance of the trade any time during the last twenty years. The result of the inquiry was to be communicated to Mr. Madgin by letter. Nest day Mr. Madgin journeyed down to Windermere. Arrived at Bowness, he found no difficulty in ascertaining the exact locality of Bon Repos, the house and its owner being known by sight or repute to almost every inhabitant of the little town. Mr. Madgin stopped all night at Bowness. Next morning he hired a small boat, and was pulled across the lake to a point about half a mile below Bon Repos, and there he landed. Mr. Madgin was travelling _incog_. The name upon his portmanteau was "Jared Deedes, Esq." He was dressed in a suit of glossy black, with a white neckcloth, and gold-rimmed spectacles. He had quite an episcopal air. He did not call himself a clergyman, but people were at liberty to accept him as one if they chose.