Hi Jim,

I have just checked out the link that you kindly provided for us at :-

http://persistencefoundation.org/scottishbarnduring02.htm

and the centre picture at the top appears to show two normal English tying joint type jowl posts that have been rotated and joined together to form this joint. The resulting joint would be very difficult to assemble if a normal assembly wall plate were added.

I think therefore that this joint is an evolution based on English rather than standard Scottish building practice.

Case prooved ?

Regards

Ken Hume

Looking back to see the way ahead !