yes it is interesting that there doesn't seem to be any attempt to hide the reusing of tunes in these books. In Walsh's 6th there are groups of tunes from various Playford editions still grouped together as in the earlier editions.

One of the disparities in sharp is in regard to the term 'right and left' which which seems to end a significant number other dances I am looking at. If I am reading him right sharp interprets as a circular Hey. whereas, country dancing made plain and simple published in 1764 gives a somewhat different explanation to left and right. "it requires to couple, being placed properly, each opposite their partner; and then let all be sure to pass on the right side of their partner, and give the right hand in passing, all moving forward round [so far so good], the first man and the second woman circle to the right, and the first woman circle to the left [ whoops now circling with opposite partners] will next meet woman to woman and man to man who to pass on the left sides, and given the left-hand in passing [back to a hey].