(C.) TO THE EMPEROR OF RUSSIA, _April 1657_:--On the throne of this vast, chaotic, semi-Asiatic Empire at this time was Alexis, the son and successor of Michael Romanoff, the founder of that new dynasty under which Russia was to enter on her era of greatness. He had come to the throne, as a young man, in 1645, and had since then, in the despotic Czarish way, continued his father's policy for the civilization of his subjects by cultivating commerce with the neighbouring European states, and bringing in foreigners for service in his armies or otherwise. On the execution of Charles I., however, he had broken utterly with the Regicide Island, and had ordered out of his dominions all English adherents of the Parliament. He alone of European Sovereigns had at once taken this high stand against the English Republic. But events, Russian interests, and communications from the Protector, had gradually brought him round. Since 1654, when a certain WILLIAM PRIDEAUX had been sent to Russia as agent for the Protector, the trade with Russia, through Archangel, had resumed its former dimensions, under rules permitting English merchants to sell and buy goods at Archangel, and have a factory there, but "not to go up in the country for Moscow or any other city in Russia."[1] The envoy himself, however, had visited Moscow; and his long letters thence, or from Archangel, had thrown much light on the internal condition of that strange outlandish Muscovy, as Russia was then generally called, about which there had been hitherto more of curiosity than knowledge. The immense wealth of the Emperor, his vast military forces, the barbaric splendours of his Court, the Oriental submissiveness of the people and their oddities of dress and manners, the peculiarities of the Greek Religion, the great resources of Russia, and the obstructions yet existing in the way of trade with her, had all become topics of English gossip. But, in fact, Alexis had become a considerable personage in general European politics. By wars with Poland, and other populations about him, he had greatly enlarged his territories, adopting new titles of sovereignty to signify the same; and in the general imbroglio of North-Eastern Europe, involving Sweden, Denmark, Poland, the United Provinces, and even Germany, he had come to be a power whose movements and embassies commanded attention. It had been resolved, therefore, by the Protector and his Council to send a more special envoy to "the Great Duke of Muscovia"; and, on the 12th of March 1656-7, RICHARD BRADSHAW, ESQ., so long Resident for the Commonwealth at Hamburg, was recommended by the Council to his Highness as the proper person.[2] The present letter of Milton, accordingly, is the Letter of Credence which Bradshaw was to take with him.--The Letter is addressed to his Russian Majesty, as punctually as possible, by all his chaos of titles, thus: "Oliver,