A case similar in principle to that of Irving was Audubon, the indefatigable and amiable Audubon. The exceeding costliness of his "Birds of America" protected that work as completely as an International Copyright could; and, but for this, we never could have had it. Audubon enjoyed the market of the world! The price of his wonderful work was a thousand dollars, and, at that period, neither Europe nor America could furnish purchasers enough to warrant him in giving it to the press. But Europe _and_ America could! Europe and America _did_,--each continent taking about eighty copies. The excellent Audubon, therefore, was not ruined by his brave endeavor to honor his country and instruct mankind. He ended his days in peace in that well-known villa on the banks of the Hudson, continuing his useful and beautiful labors to the last, and leaving to his sons the means of perfecting what he left incomplete. But to return to Herbert Spencer, the author of "Social Statics"; or, as we call it, Jeffersonian Democracy, illustrated and applied. Unconnected with the governing classes of his own country, escaping the universities, bred to none of the professions, and inheriting but a slender patrimony, he earned a modest and precarious livelihood by contributing to the periodicals, and wrung from his small leisure the books that England needed, but would not buy. An American citizen, Professor Youmans, felt all their merit, and perceived how adapted they were to the tastes and habits of the American mind, and how skilfully the ideas upon which America is founded were developed in them. He also felt, as we have heard him say, that, next to the production of excellent works, the most useful thing a man can do in his generation is to aid in giving them currency. Aided by other lovers of his favorite author, he was soon in a position to bear part of the heavy expense of stereotyping Mr. Spencer's works; and thus Messrs. Appleton were enabled, not only to publish them, but to afford the author as large a share of the proceeds as though he had been a resident of the United States. Thus Herbert Spencer, by a happy accident, enjoys part of the advantage which would accrue to all his brethren from an International Copyright; and we have the great satisfaction of knowing, when we buy one of his volumes, that we are not defrauding our benefactor. Charles Scribner habitually pays English authors a part of the profit derived from their republished works. Max Müller, Mr. Trench, and others who figure upon his list, derive revenue from the sale of their works in America. Mr. Scribner considers it both his duty and his interest to acquire all the right to republish which a foreign author can bestow; and he desires to see the day when the law will recognize and secure the most obvious and unquestionable of all rights, the right of an author to the product of his mind.