“I beg yours,” rejoined the Doctor, testily. “The origin of the muscle, or place where it arises, is the first thing to be described. The use comes afterwards. It is an axiom of anatomical science—”

“But, my dear sir!” cried Valentine—

“No,” said the Doctor, peremptorily, “you must really excuse me. This is a professional point. If I allow erroneous explanations of the muscular system to pass unchecked in my presence—”

“I don’t want to make any!” cried Mr. Blyth, gesticulating violently in the direction of Columbus. “I only want to—”

“To describe the use of a muscle before you describe the place of its origin in the human body,” persisted the Doctor. “No, my dear sir! I can’t sanction it. No, indeed! I really can NOT sanction it!”

“Will you let me say two words?” asked Valentine.

“Two hundred thousand, my good sir, on any other subject,” assented the Doctor, with a sarcastic smile; “but on this subject—”

“On art?” shouted Mr. Blyth, with a tap on Columbus, which struck a sound from the canvas like a thump on a muffled drum. “On art, Doctor? I only want to say that, as Columbus’s early life must have exercised him considerably in hauling ropes and pulling oars, I have shown the large development of his Biceps muscle (which is principally used in those actions) through his sleeves, as a good characteristic point to insist on in his physical formation.—That’s all! As to the origin—”

“The origin of the Biceps Flexor Cubiti, your Ladyship,” resumed the pertinacious Doctor; “is by two heads. The first begins, if I may so express myself, tendinous, from the glenoid cavity of the scapula—”

“That man is a pedantic jackass,” whispered Mr. Hemlock to his friend.