Opinions differ on the last two bars of this dance (petronella or turn right hand). For detailed discussions of interpretations of historical sources see the following strathspey mailing list threads:
<<sspey-thread:70706>>,
<<sspey-thread:69473>>,
<<sspey-thread:69471>>,
<<sspey-thread:37481>>.
The dance is attributed to Jack McConachie on the basis that his changes from the original are effectively a new dance.