From the wild and beautiful scenes about Loch Katrine, which stirred the naturalist's emotions and evoked the desire to remain until the curtain of night had gradually and peacefully closed the landscape from their view, they proceeded to the rocky shores of Loch Lomond, where they found "a few small stone cabins, some fat bairns, abundance of ale, and a sufficiency of capital whisky." After crossing to Tarbet and examining both the head and the foot of the lake, they went on from Balloch to Dumbarton by stage, and thence by steamer to Glasgow; there they spent a few days, and returned to Edinburgh by way of Dumbarton and Lanark. Steamers and coaches, slow as they then were, were all too fast for Audubon on this journey, and he declared that if ever again he visited the Highlands, it should be on foot, "for no man, with nerve and will, and an admirer of the beauties of nature, can ever truly enjoy the pleasures of travelling, unless he proceed in this manner." Mrs. Audubon's health had not improved by the journey, for shortly after their return she was again taken ill; she was placed in the care of Dr. John Argyle Robertson, for whose efficient aid and "kind and gentle treatment," said Audubon, "we can never cease to cherish the most lively feelings of affection." "It is a curious part of my history," he continues, "that during the whole of my sojourn in Britain, none of the principal medical advisers whom we had occasion to employ would receive any recompense from us." By the 5th of November, 1838, but a few days after the issue of the fourth volume of his "Biographies," the printing of the fifth and last had already begun. The following letter[152] is interesting for its personal details, and in showing that his confidence in the existence of the "bird of Washington"[153] had not been shaken: _Audubon to Edward Harris_ EDINBURGH _December 19th., 1838_. MY DEAR FRIEND: Your letter of the 13th. instant to Victor reached us this morning, and glad were we all to hear from you. My object in writing to you is, for the purpose of assuring you that I feel great [pleasure] in preparing a box of bird skins for you according to your desire. It is true, however, that I am now on the eve of commencing my synoptical arrangement of our birds, I shall not be able to show you as many of my specimens [as] I could otherwise have done, but you must take the will for the deed. The Box will be taken as far as London by Victor, who will leave us on the first of January. You will find in it a list of the contents, and I trust such bird skins as may answer your purpose well. Besides these Victor will also attend to your request as soon as in New York and will ship to you by way of Havre as you direct.