The landlord, Mr. Lacelle, and Count D'Orsay bade them an affectionate adieu, after the two former had been sincerely thanked for their kindness to the young strangers, and the latter had begged them to renew their promise of a visit before they returned to America. To Mr. Van Rasseulger he extended an urgent invitation to visit him, whenever it should be convenient to him. Just before they left, Mr. Lacelle requested Eric's address, saying that he had written to Mr. Montgomery about the box of money, and would forward his reply to Eric. The boys were not sorry to leave Strasbourg, because Mr. Van Rasseulger had told them he should propose to the doctor to obtain horses there, and travel on horseback through the Black Forest, and over the mountains, to Munich, in Bavaria. They were enchanted with this idea, and during their sail down the Rhine lost much of the beautiful scenery about them in mutual conjectures as to whether uncle Charlie would like the proposition. When they reached Heidelberg, the doctor was already there, waiting for them. He was quite well satisfied with the plan, and said he would give the boys two days to explore Heidelberg, and would meantime be making the necessary arrangements. The boys did not like Heidelberg particularly, and Eric's shoulders were shrugged expressively when his uncle told him he was to be a student in the university, after his school course was completed. The only building of which they took any notice was the Church of the Holy Ghost--a large structure with a very high steeple, divided so that Protestant and Roman Catholic services were held in it at the same time. But perhaps the picturesque old town might have had more attraction for them, had not Dr. Ward and Mr. Van Rasseulger been looking up good horses to purchase for the journey. They soon found just what they wanted--a large, powerful horse for the doctor, and a couple of small horses, almost ponies, for the two boys. It was amusing to see the different evidences of delight manifested by Eric and Johnny. Eric's face flushed with glad emotion, and a quiet "Uncle John, how good you are!" was all that he said. But Johnny danced around the horses, wild with delight, throwing his cap in the air, dancing and hurrahing with all his might, and bestowing kisses indiscriminately upon his good papa and the dumb animals. One of the horses was coal black, with a white star upon his forehead, and one white foot; he was for Eric. Johnny's was a bright bay, with four white feet and a white nose: and the doctor's was a chestnut-colored horse, with a darker mane and tail. Of course the first great question was, what they were to be called. "I have named my horse 'Perseus,'" said the doctor, "in honor of the illustrious slayer of the Gorgon Medusa, and the deliverer of Andromeda." "I'll call mine 'Jack,' in honor of papa," said roguish Johnny. "And mine," exclaimed Eric, "shall be Bucephalus."