She [Mrs Trevor] said so much about our going to the opera, and that there was no impropriety in our dress, that we stayed till between eight and nine, when her whist party was finished, and then accompanied her to the Carignano Theatre. It has been burnt down and rebuilt since we saw it last, and is much neater and prettier—no gilding, but the boxes painted like stucco ornaments, upon a pale green ground, in very good taste. The opera, ‘La Zingara in Fiera’ [sic] very pretty; the prima donna an admirable singer. I asked in vain for her name; she was La Prima Donna, and nobody knew more of her.