Here is a link to an article published by H.L. Seneviratne, in Social Affairs, Vol.1 No.7, 74-87, Fall 2017.
ABSTRACT: For eight years after its establishment in 1948, the Department of Sociology remained in the ambiguous terrain of being both an independent department and a subordinate partner of the Economics Department. In that role Sociology supplied courses for students in Economics who wished to choose it as their ‘Special Subject’ within Economics. Sociology also supplied a few courses for the Sinhala and Philosophy departments. This paper narrates the story of how the two major figures to chair the Department of Sociology during this period contributed in their own ways to facilitate the passage of Sociology to the status of a degree-granting department, ending its ambiguous, anomalous, and liminal state