Although his talent and acquirements are displayed more particularly as an instrumentalist, Mr. Lewis is also a fair vocalist, understands thoroughly its theory, and teaches singing. He is a valued member of several musical clubs of Boston and vicinity composed of artists of the highest culture, such as the Haydn and Mozart Clubs of Chelsea, Mass. He, besides, meets with a select few in Boston, in a circle of studious amateurs where none but the finest and most classical music is performed. He is a member of the "Boston Musicians' Union," which comprises in its membership most of the best musicians of the city; such as, for instance, Julius Eichberg, P.S. Gilmore, C.N. Allen, Messrs. Listemann, Lothian, &c. In the Haydn and Mozart Clubs Mr. Lewis has played the part for first violin; and on several occasions, in the absence of the directors of those bodies, he has assumed acceptably the conductorship. His general musical accomplishments, and his acquaintance with each instrument used in these clubs, make him really the most useful and valued member; for, if a member fails to appear at a performance, he need not be much missed, since Mr. Lewis, if present, can take his instrument, whatever it may be, while his own regular place may be taken by the next first violinist in rank. He has performed on several great occasions, notably at the World's Peace Jubilee, held in Boston in 1872, in an orchestra of nearly two thousand instrumentalists, all selected, and of fine skill. Before being accepted there, he was subjected to a most rigid examination by the superintendent of the orchestra, being required to play on the violin some of the most complicated and difficult compositions for that instrument. This test he stood so well, indeed, as to elicit from the superintendent, in the warmest manner, the comprehensive exclamation, "Lewis, you are a musician!" At the grand testimonial concert tendered P.S. Gilmore (the projector of the two great "Jubilees") at the Boston Theatre, prior to his going to New York to reside, Mr. Lewis appeared in a selected orchestra, and contributed not a little to the success of that interesting occasion. He is constantly arranging and composing music for his classes, for orchestras and bands. At present he is engaged in composing for the piano what he will call "A Meditation," and in which he will include some of the finest ideas that constantly fill his musical mind. Some of these thoughts I have heard him play; and I have been so pleased by them, as to beg him not to relinquish his purpose to give them to the public, being convinced that in so doing he would afford delight to all lovers of good music, and add much to his already fine reputation. Many complimentary notices touching the musical abilities of Mr. Lewis have from time to time appeared in the public journals. A few of the briefest are given below. One of these journals, a good while ago, said,-- "Mr. Lewis is an amateur performer of marked ability."