I think the article gives a fair overview and raises quite a few interesting points about the group as well as highlighting some of the people involved (some very distinquished people) and the overall significance of what was published.
The paper joins the Contents and Index of the Proceedings, which have been available online on the Forth Naturalist and Historian website at www.fnh.stir.ac.uk/ for some time.
Also relevant is the Recollections of Dr Galbraith, an active member and contributor to the Proceedings, which can be found on the Stirling Local History Society website.