It was the opinion of Robert Rantoul and other members of the Congressional Committee that Doctor Jackson suffered from a "heated and disordered imagination," and that is the most charitable view that one can take of such a letter as this. Whatever may have been the result of Doctor Jackson's investigations with sulphuric ether, it is certain that he added nothing to the scientific knowledge of his time in that respect; [Footnote: Edinburgh Medical Journal, April 1, 1857.] and if he persuaded Doctor Morton to make use of it, why was he not present to oversee his subordinate? also, why did he make a charge on his books a few days later against Doctor Morton of five hundred dollars for advice and information concerning the application of ether? It is not customary to charge subordinates for their service but to reward them. The two horns of this dilemma are sharp and penetrating. In a later memorial of the same general tenor, which Doctor Jackson forwarded to Baron Humboldt, he stated that he had applied to other dentists in Boston to make the experiment of etherization, but found them unwilling to take the risk; but the names of the dentists have never been made public, nor did any such appear afterwards to testify in Doctor Jackson's behalf. Still more remarkable was the action of the French Academy of Arts and Sciences in these premises. The French Academy was founded by Richelieu, but abolished in the first French Revolution, with so many other enchanted phantasms. Napoleon re-established it, and gave it new life and vigor by a discriminating choice of membership; but it is a close corporation which renews itself by its own votes, and such a body of men is always in danger of becoming a mutual admiration society, and if this happens its public utility is at an end. In the present instance the action of the French Academy was illogical, unscientific, and mischievous. Doctor Jackson's letter was brought before that august body on January 18, 1847, but previous to that time Doctor Warren had written to Doctor Velpeau, an eminent French surgeon, concerning the success of etherization at the Massachusetts Hospital, and suggesting the use of it in the hospitals at Paris; and Doctor Velpeau referred to this fact at the meeting of January 18th. The contents of this letter have never been made public; but it is incredible that Doctor Jackson's claim should have received any support from it. Nevertheless, the members of the French Academy decided to divide one of the Mouthyon prizes (of five thousand francs for great scientific discoveries) between Dr. W. T. G. Morton and Elie de Beaumont's American friend, Dr. C. T. Jackson; and they _conferred this particular favor on Dr. Jackson at his own representation, without one witness in his favor, and without making an inquiry into the circumstances of the discovery._ Could the Northfield Academy of boys and girls have acted in a more heedless or unscientific manner?