THE COMING MEN. – The Japanese embassy, at San Francisco, bring $100,000 to defray their personal expenses, although invited at the expense of the United States. They were given the best quarters on board the Powhatan during the voyage, and arrived in good health and highly pleased. The chief dignitaries are magnificently dressed in embroidered silk robes, each wearing a sword of beautiful workmanship. They carry an immense amount of baggage, including many boxes of presents to the United States government. It was expected that the Powhatan would sail again from San Francisco on the 5th inst., for Panama. There the embassy would cross the Isthmus and take passage on board the frigate Roanoke, which would take them direct to Washington. They may be expected there about the first of May.