Furthermore, Mark Twain had finally invested in another patent, the type-setting machine mentioned in a former chapter, and the demands for cash to promote this venture were heavy. To his sister Pamela, about the end of 1887, he wrote: "The type-setter goes on forever at $3,000 a month.... We'll be through with it in three or four months, I reckon" --a false hope, for the three or four months would lengthen into as many years. But if there were clouds gathering in the business sky, they were not often allowed to cast a shadow in Mark Twain's home. The beautiful house in Hartford was a place of welcome and merriment, of many guests and of happy children. Especially of happy children: during these years--the latter half of the 'eighties--when Mark Twain's fortunes were on the decline, his children were at the age to have a good time, and certainly they had it. The dramatic stage which had been first set up at George Warner's for the Christmas "Prince and Pauper" performance was brought over and set up in the Clemens schoolroom, and every Saturday there were plays or rehearsals, and every little while there would be a grand general performance in the great library downstairs, which would accommodate just eighty-four chairs, filled by parents of the performers and invited guests. In notes dictated many years later, Mark Twain said: "We dined as we could, probably with a neighbor, and by quarter to eight in the evening the hickory fire in the hall was pouring a sheet of flame up the chimney, the house was in a drench of gas- light from the ground floor up, the guests were arriving, and there was a babble of hearty greetings, with not a voice in it that was not old and familiar and affectionate; and when the curtain went up, we looked out from the stage upon none but faces dear to us, none but faces that were lit up with welcome for us." He was one of the children himself, you see, and therefore on the stage with the others. Katy Leary, for thirty years in the family service, once said to the author: "The children were crazy about acting, and we all enjoyed it as much as they did, especially Mr. Clemens, who was the best actor of all. I have never known a happier household than theirs was during those years." The plays were not all given by the children. Mark Twain had kept up his German study, and a class met regularly in his home to struggle with the problems of der, die, and das. By and by he wrote a play for the class, "Meisterschaft," a picturesque mixture of German and English, which they gave twice, with great success. It was unlike anything attempted before or since. No one but Mark Twain could have written it. Later (January, 1888), in modified form, it was published in the "Century Magazine." It is his best work of this period.