A pretty play is "Sweet Lavender" at the Lyceum. Its plot is simple. A young lawyer falls in love with his housekeeper's gentle little daughter, but family pride prevents their union until, by the opportune failure of a bank, his fortunes are reduced to a level with hers. Its clever details and quiet humor make it well worth seeing. Pinero, the author, is a playwright skilled in the mechanical arrangement of his situations, and everything runs smoothly. Miss Louise Dillon as Lavender, fits the part exactly. Thompson and Ryer's play of "The Two Sisters" at Niblo's made many friends, in spite of its somewhat threadbare theme. There was the typical dissolute young man who seduces one of the sisters, and the benevolent hotel-keeper who befriends and marries the other. The villain murders his father, is arrested, and dies, while the betrayed girl is given a home by her sister's husband. Some good singing is scattered throughout the play. A similar drama, full of love and murder, was "The Fugitive," by Tom Craven, which had a very brief run at the Windsor. Vivacious Nelly Farren and the London Gaiety Company, which recently held the boards of the Standard Theatre in "Monte Christo, jr.," gave New Yorkers an enlivening taste of English burlesque. The play is nothing, the dancing everything. The German opera season is well under way. The Metropolitan Opera House opened with "The Huguenots," which was followed by "William Tell" and "Fidelio." Herr Anton Seidl, with his unrivalled orchestra, makes these productions of the great German and Italian composers a yearly treat to lovers of music, which is looked forward to with eagerness and parted from with regret. "The Old Homestead" holds its own at the Academy of Music; the "Brass Monkey" at the Bijou has had a longer run than it deserves; Clara Morris has been appearing in Brooklyn; Louis James and Marie Wainwright are beginning their New York engagement. "She" was pronounced a great success in Boston, over $1600 being taken in at one performance. Mr. Boucicault is conducting his Madison Square theatre-school of acting with patience and confidence, although the results thus far are not very promising. Of the eighty pupils, the men are awkward and the women lack talent. However, as Mr. Boucicault said, if but three or even one out of the eighty should come to dramatic eminence, it would be well worth all the trouble. Our German fellow-citizens are to be congratulated on the opening of Mr. Amberg's new theatre in Fifteenth Street. The location is central, the house is well built, the company good, and the repertory includes drama, comedy, farce, and comic opera.