Boston has been in a flutter of agitation and excitement to-day; for, truth to say, Boston herself has not been over sanguine as to the success of the Jubilee. It is probable that not a person in the city has regarded the experiment in the light of an unquestioned success, except Mr. Gilmore, in whose fertile brain the Jubilee was conceived, and by whom it has been pushed forward, in the face of obstacles, to a successful birth. When Mr. Gilmore offered the Jubilee to New York, the Manhattanites laughed at him, and gently insinuated that he had gone clean daft, whereupon Mr. Gilmore took his embryonic Jubilee to Boston, and, undaunted by obstacles, and unannoyed by the gibes and jeers of the faithless, he worked in season and out of season, put this wheel and that wheel together, got this man and that man interested in it, melted even the adamantine hearts of the musicians themselves, and at last got his project so far advanced that it became a matter of city pride to put the municipal shoulder to the wheel and help Gilmore out with his mammoth undertaking. And Boston did help him right royally. Once provided with the ducats and with the collaterals, which guaranteed him financial safety, the foundations of the enterprise were laid, and the superstructure grew rapidly. Singers and instruments, big singers and little singers, big fiddles and little fiddles, poured in as fast and as thick as the dogs and cats in Beard's picture. I myself saw, riding on a boat of Commodore Fisk's, from New York to Fall River, _en route_ to the Jubilee, sixty double basses ranged along on the deck, like coffins swathed in green bags, and to-day I saw them again manipulated in the vast orchestra, to show that I do not lie. The material was, at last, all in his hands, and the material was composed of one thousand instruments--a big organ, ten thousand singers, a Coliseum, and sundry properties by way of appendices, such as a battery of artillery, church bells, and anvils. And the question immediately arose: What will he do with them?