Second barn structure

"A second structure is another English barn built on to the first English barn. Physical evidence dates this structure to the early 19th century. The frame was laid out and cut using a simpler timber framing methodology, called "square rule," developed in the late 18th/early 19th centuries. The frame is noticeably different from the earlier barn. However, there are similarities in the framing of the two barns, particularly the roof systems, that indicate the barns may have been constructed by the same builder. If this is the case, it would illustrate an interesting evolution in this builder's craft and business skill. 
"When the second barn was completed the resulting structure would have been a double English barn. This type of barn was unusual for its time. At present, in New England, double English barns are rare numbering perhaps no more than half a dozen."     John Butler 7-19-99