May I wish all our fellow RT Forum contributors a Very Happy Christmas & a Healthy 2015 !!u
I would appreciate further clues in the middle of the puzzle :- 19A "They're at a stage as tiny creature, one disheartened. "P***E. 32A "White fluid of former times" ** A **. 20D " To some degree lost in 36 Across. 29D "Apart from trapped reverse passage" ***E*P*