Guests at the Leightons’ were divided into two classes. There were those who were friends of Mr. Leighton, and who therefore were interested in art, or literature, or science, or public enterprise, but were not expected to go further; and there were those who came in a general way and who might be expected to be interested in anything from a game of tennis to a tea party. Of the first might be reckoned the like of Mr. Sturgis, who painted pictures in a magnificent manner, and who, at the end of a large cigar, would breathe the heresies on the teaching of art which for ever paralyzed the artistic abilities of Elma. Mr. Sturgis was quite young enough for an Aunt Katharine public to quote his eligibility on all occasions. "You don’t understand, Aunt Katharine," Mabel told her once. "Nobody seems to understand that a man, even a young man, may adore papa without having to adore us at the same time. Mr. Sturgis is quite different from your kind of young man." "Different from Robin, I suppose," sighed Aunt Katharine. "Yes, quite different from Robin," said Mabel sedately. Robin had certainly from the first put Mr. Leighton into the position of being his daughter’s father. Mr. Sturgis, on the other hand, found his first friend in Mr. Leighton because he had such a nice discriminating and most sympathetic enthusiasm for Art. Besides which Mr. Leighton had the attributes of an exceptional man in various respects. The girls put Mr. Sturgis on the same high plane as their father and admired him openly accordingly. But there were others whom they put on this plane by reason of their accomplishments and yet did not admire at all. Amongst these was the "Split Infinitive." The first call on the part of Professor Theo. Clutterbuck was one never to be forgotten. He found a roomful of people who, so far as his own attitude to them was concerned, might have been so many pieces of furniture. Mr. Sturgis had at least the artist’s discrimination which made him observe one’s appearance, and he also allowed one to converse occasionally; but Dr. Clutterbuck rushed his one subject at Mr. Leighton from the moment of his entrance, and after that no one else existed. "What more or less could you expect from the father of the Serpent?" asked Betty. Lance was responsible for the nickname. The Serpent, the elf-like daughter of the Professor, staying next to the Turbervilles, had introduced herself in a violent manner long ago to Betty and Elma. Sitting one day, hidden high in the maple tree, she cajoled her cat silently over the Turberville wall and from a wide branch sent him sprawling on a tea table. From the moment that the black cat drew a white paw from the cream jug, and a withering giggle from the maple tree disclosed the wicked little visage of the Serpent, war had been declared between the Clutterbucks and the Turbervilles. Lance occasionally removed the barrier and met the Professor in company with his own father.