The prime achievement was their publication of 61 volumes of Transactions between 1878 and 1939.
In conjunction with the work on the Society, I have scanned the original Index (published in 1936) and the contents for each volume and these are now available to consult (free) on the Forth Naturalist and Historian website
The format means that they still fall short of modern standards. But the two files should make it easier to locate material on a wide range of topics (historical, archaeological, wildlife and others) mainly of local interest. Copies of the original Transactions cane be consulted in Stirling Central Library, Stirling University Library and National Library of Scotland, amongst others.