1. White poplar
6. Coming up
11. Early computer language
12. Downpour
15. Encourage
16. Less forgiving
17. Paintings
18. Crank
20. Form of "to be"
21. Mormon state
23. Speed competition
24. Enter the water headfirst
25. Adopted son of Claudius
26. Musty
27. Dossier
28. Combines
29. Assist
30. Confer happiness on
31. Flip-flop
34. Delete
36. The collection of rules 37. Assert
41. Magistrate of old Venice
42. Cone-bearing trees
43. Thorny flower
44. Imitate
45. Nap
46. Puppy sounds
47. Estimated time of arrival
48. Think likely
51. Tiny circle
52. Monk's haircuts
54. Half the diameter
56. Colonnades
57. Highland families
58. Cast out
59. Marsh plant
2. Illegitimate child
3. Estimated (abbrev.)
4. Legal claim
5. Beige
6. Assault
7. Equine
8. A Great Lake
9. Circle fragment
10. Specifics
13. Fretfulness
15. All the animal life
16. Offends
19. Railroad
22. Captive
24. Food-related
26. Challenge
27. Influenza
30. Stoops
32. Employ
33. Reveals
34. Newspaper bigwig
38. Annulling
39. Take up the cause
40. Pauses
42. Woods
44. Of higher order
45. Challenges
48. Guy
49. Circle fragments
50. Harvard rival
53. Droop
55. Father