Brickwork

Enter the solutions to the clues in their numbered layers of the wall. Each word must be an anagram of its neighbours, plus or minus one letter.

1 Art of shaping decorative shrubs 2 Equality, unity 3 Long-snouted mammal 4 Excursion, jaunt 5 Mine 6 Rod on which roasting meat is turned 7 Liquid measures — eight to the gallon 8 Engine’s cylindrical driving arm 9 Choices available