Your favor of the 16th I recd last night. The first house I attempted to build in pisé work was commenced in September 1810 when we had the art to learn, & I accomplished it, that is the walls were completed, in a day less than a month, without allowing for interruptions on account of bad weather. I undertook it with my Carpenters, say about six in number, & I am nearly certain that we had not more than that number on an average during the time that we were engaged in the work.