Professional men are usually very much alive to the danger of confusion as affecting their success in life. If you are known to do two things, a confusion gets established between the two, and you are no longer classed with that ease and decision which the world finds to be convenient. It therefore becomes a part of worldly wisdom to keep one of the occupations in obscurity, and if that is not altogether possible, then to profess as loudly and as frequently as you can that it is entirely secondary and only a refreshment after more serious toils. Many years ago a well-known surgeon published a set of etchings, and the merit of them was so dangerously conspicuous, so superior, in fact, to the average of professional work, that he felt constrained to keep those too clever children in their places by a quotation from Horace,-- "O laborum Dulce lenimen!" To present one's self to the world always in one character is a great help to success, and maintains the stability of a position. The kings in the story-books and on playing cards who have always their crowns on their heads and sceptres in their hands, appear to enjoy a decided advantage over modern royalty, which dresses like other people and enters into common interests and pursuits. Literary men admire the prudent self-control of our literary sovereign, Tennyson, who by his rigorous abstinence from prose takes care never to appear in public without his singing robes and his crown of laurel. Had he carelessly and familiarly employed the commoner vehicle of expression, there would have been a confusion of two Tennysons in the popular idea, whilst at present his name is as exclusively associated with the exquisite music of his verse as that of Mozart with another kind of melody.