He exempted the Massachusetts Hospital from the application of his royalty, and it was only right that he should do so; but, unfortunately, it was the only large hospital where etherization was regularly practised. In order to extend its application Doctor Morton secured the services of three young physicians, practised them in the use of the gas, and paid them a thousand dollars each to go forth into the world as proselytes of his discovery; but they met everywhere with a cold reception, and were several times informed that if the Massachusetts Hospital enjoyed the use of etherization, other hospitals ought to have the same privilege; so that his enterprise proved of no immediate advantage. The Mexican War was now at its height, and Doctor Morton offered the use of etherization to the government for a very small royalty, but his offer was declined by the Secretary of War. He soon discovered, however, that surgeons in the army and navy were making free use of it,--contrary to law and the rights of men. Individuals all over the country--dentists and surgeons--were doing the same thing; and it was more difficult to prevent this than to execute the game-laws. For such an order of affairs the decision of the French Academy was largely responsible, for if men only find a shadow of right on the side of self-interest, they are likely enough to take advantage of it. Meanwhile Doctor Jackson, with a few friends and a large body of Homoeopaths who acted in opposition to the regulars of the Massachusetts Hospital, kept up a continual fusillade against Doctor Morton; but this did him little harm, for early in 1847 the trustees of the hospital decided, by a unanimous vote, that the honor of discovering etherization properly belonged to him. Doctor Jackson questioned the justice of this decision, and applied for a reconsideration of the subject. Whereupon the subject was reconsidered the following year, and the same verdict rendered as before. Doctor Jackson then carried his case to the Boston Academy of Arts and Sciences, when Professor Agassiz asked him the pertinent question: "But, Doctor Jackson, did you make one little experiment?" adding drily, after receiving a negative reply: "It would have been better if you had." It is to be regretted that Doctor Jackson should have attacked Doctor Morton's private life (which appears to have been fully as commendable as his own), and also that R. W. Emerson should have entered the lists in favor of his brother-in-law. In one of his later books Emerson designates Doctor Jackson as the discoverer of etherization. This was setting his own judgment above that of the legal and medical professions, and even above the French Academy; but Emerson had lived so long in intuitions and poetical concepts that he was not a fairly competent person to judge of a matter of fact. It is doubtful if he made use of the inductive method of reasoning during his life.