I think I can now declare this page complete, thanks to you guys. However, as is often the case, the answer begets another question.
The two individuals who had been asked to make their mark (William Deas and David Carstairs) do not appear anywhere within the main text below which the Latin paragraph appears. That text names only Andrew Edie, deacon of the hammermen, and William Sword, admitted as freeman. Furthermore, beside the Latin there appear three signatures (Robert Scott, William Waddell and William Morris) and two sets of initials (AED and WG). There are no other marks; the page is quite clear throughout. I also looked at entries immediately before and after - no trace of Deas or Carstairs.
Ah well... the golden rule is to transcribe what you see. I've done that, but will be adding to the notes section at the end of the entire 368-page document. If/when it finally makes publication I'll be sure to give credit for the help I've received.