1. City in SE Finland
6. Rifts
10. Notice of an intended marriage
12. Murders
14. Set that is a part of a larger set
16. Female fox
17. Small cask
20. Monarch butterflies
22. Botswana monetary unit
23. Footslog
25. NE New Jersey town
27. Vim
28. Approval
29. French mathematician and philosopher
31. Native South African
34. In an awful manner
36. Toward the back
38. Plant fence
39. Column dwellers
41. Spreads sleeping sickness
44. Solution resulting from dissolving out
46. Sheepskin leather
47. Minor falsehood
50. Smooth fabrics
52. Traded
53. Vamoosed
55. Lounged
57. Aegean island
58. Male name
59. Tidy
61. Retained
62. Scottish coronation site
63. Equilateral parallelograms
64. Makes a record of

Down

1. Chief prize
2. Standard-setting agency
3. Arabian royal house
4. Unbolt
5. Undo (e.g. a dress)
7. Send
8. State of confusion (3-2)
9. Ancient upright stone slab with markings
11. Oceanic animal forming mosslike colonies (3,3)
13. Sudden in action
15. Silkworm
18. Fraternal organization
19. Leave (2,4)
21. Cloak-and-dagger
24. Stainable
26. Fenced areas
30. Big cat crosses
32. Catches
33. De facto
35. Caused to go
37. Film comedian and director
39. Feel pain
40. Door posts
42. Special disposal of goods
43. Ultimate goal (3-3)
45. Intertwine
48. Sicker
49. Shelf-like sleeping space
51. Assault (3,2)
54. Old-fashioned person
56. Depression
60. Born