This puzzle originally appeared in the May 15, 1976, issue.
ACROSS
  1 See 16 down
10 No matter which is bad, in this case! (One sort of passes around it.) (7)
11 Checks, or possibly bonds. (7)
12, 13 and 14 Duck offspring like this? (That’s one way to be caught in the hedge!) (5,3,5)
15 A short time, and French musicians might play one. (5)
17 The letters of Tom Paine would hardly be expected to show 10. (8)
21 The last thing at meals to go wrong, it should be emphasized. (8)
23 Pecuniary profit as motive. (5)
26 Yet one wouldn’t expect them to consist only of ground grain. (5)
28 A runner used to jump sometimes. (3)
29 See 19 down
30 and 29 down Vault and narrow passage, completely protected. (4,3,5)
31 Not quite like Dobbin and Babe, perhaps, in spring and fall. (7)
32 In certain animals, unable to hold drink when eating. (8)
33 Has a strong affection for something like the first two notes inside. (6)
DOWN
  1 and 25 down If we’re constantly bored, evidently this, as a Victorian saying. (2,3,3,6)
  2 The next CIA upheaval? Not true! (7)
  3 Might appear as the change of speed. (5)
  5 Commit burglary with firearms? (5)
  6 Musical get-together? (5)
  7 The sort of Spanish gentleman that follows me up with the essayist. (7)
  8 Re this relative, it’s likely to be a hold-out. (6)
  9 Elemental forms, when the poet is so upset. (8)
16, 1 and 4 across Article giving direction to correct relations with a couple who took off early. (3,6,8)
18 An hourglass in western character? (3-5)
19 and 29 across Nothing left to blow up, as the watchman once said. (4,4)
  2 Only a jerk might tell these to a doctor. (8)
22 Trade cars and the like. (7)
24 There’s a dry type, not so dirty. (7)
25 See 1 down
27 Take a turn around a foreign place. (5)
28 Grasslike plant with the edges slightly different. (5)
  2 See 30 across