ACROSS

1. Measure of gold purity

6. Intentions

11. Spring flowers

13. Baseball group

14. Silver confetti

15. Flashy

16. Rim

17. Give a lecture

19. Metal man

21. Openhanded blow

25. Prickly desert items

28. Gotcha!

30. Wood chopper

31. Relative of 28 Across

32. Honkers

34. Sickly

35. Stick

36. Assembly is required for this

37. Everglades bird

39. Putin's veto

41. By law

43. Strange

45. Smallest particle

49. Hope to achieve

52. Fleet

54. College employee

55. Petty officers

56. Polka dots

57. Media people

DOWN

1. Go fly a ____

2. Like the Kalahari

3. Boxing place

4. Make yourself heard

5. Player's peg

6. Sassy

7. Bowling alleys

8. Turkish title

9. Cashew, for example

10. Observe

12. Neatnik's least favorite companion

13. Hate hate hate

18. Chicken choice

20. Swine's sound

22. Lion's home

23. Car bar

24. Animal fur

25. ____ on the cob

26. Greeting to Sinbad

27. Cryptographer's case

29. Like people who say 26 Down, often

33. More smarmy

38. Compelling charm

40. Chubby Checker's dance

42. Aussie aloha

44. Time periods

46. Domesticated

47. Arty tributes

48. ____ best friend

49. Tummy muscles

50. Have dinner

51. Champion

53. Sales ____

Solution on page 299