1: How to eat the heart of marsupial (3)
2: Same as Edward, partly comforted (5)
3: Somehow it is clear and practical (9)
4: Anger that is constraining response (3)
5: King John's last to find out (5)
8: Mark in Russian bar, empty the night before (5)
9: Roosevelt's undergarment? (5)
11: Fish spawn upstream in little orifices (3)
13: God, transforming first day into last night, was received (3)