While minister at Vienna he was empowered to negotiate a treaty which should determine the status of Austrian subjects who had become naturalized as American citizens, and it was finally ratified by the Austro- Hungarian government, after much opposition from successive war ministers, who naturally regarded it as an effort to aid Austrian subjects to evade the military service of the Empire. Another convention was concluded by Mr. Jay in 1871, with Count Andrassy, affording to each country a mutual protection in trade marks, a matter of great importance to our manufacturers, and this treaty is remarkable as being the highest recognition that the Kingdom of Hungary had received in four hundred years.

The Vienna Exposition of 1873 led many American citizens to visit the Austrian capital, and increased the social duties of the Legation. The temporary suspension by the President of the American Commission, on the ground of irregularities in the management, and the oflicial duties which devolved upon Mr. Jay in consequence, aroused much personal feeling against him, and gave rise to much abuse and misrepresentation in both the European and American press. Charges made against him were, after full examination, found to be groundless, and his character as a wise and able representative of this nation was fully sustained.

In 1874 he resigned his diplomotic position and returned to America during the following year. In

1876 he delivered before the New Y'ork Historical Society the Centennial Oration in commemoration of the battle of Harleni Plains, and, at the request of the same society, prepared a tribute to the memory of John Lothrop Motley, his predecessor at Vienna, a paper which excited considerable controversy. In