1. The part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands.
4. The Mongol people living the the central and eastern parts of Outer Mongolia.
9. Winning all or all but one of the tricks in bridge.
13. Resinlike substance secreted by certain lac insects.
14. Enthusiastic approval.
15. Not easy.
16. Title for a civil or military leader (especially in Turkey).
17. An early form of modern jazz (originating around 1940).
18. (Islam) The man who leads prayers in a mosque.
19. A midnight meeting of witches to practice witchcraft and sorcery.
22. A loose sleeveless outer garment made from aba cloth.
24. A Kwa language spoken in Ghana and the Ivory Coast.
28. An associate degree in applied science.
31. English theoretical physicist who applied relativity theory to quantum mechanics and predicted the existence of antimatter and the positron (1902-1984).
33. A white metallic element that burns with a brilliant light.
35. A radioactive element of the actinide series.
36. (electronics) Of a circuit or device having an output that is proportional to the input.
37. A town in northern Egypt.
41. A light touch or stroke.
42. Cause to become awake or conscious.
45. The network in the reticular formation that serves an alerting or arousal function.
46. A waste pipe that carries away sewage or surface water.
50. In such a manner as could not be otherwise.
54. A pilgrimage to Mecca.
55. A yellow quartz.
58. The longer of the two telegraphic signals used in Morse code.
59. Made agreeably cold (especially by ice).
60. Tropical American tree grown in southern United States having a whitish pink-tinged fruit.
61. A dark-skinned member of a race of people living in Australia when Europeans arrived.
62. A three-tone Chadic language.
63. Minute floating marine tunicate having a transparent body with an opening at each end.
64. (informal) Roused to anger.

1. By bad luck.
2. Kamarupan languages spoken in northeastern India and western Burma.
3. Someone who works (or provides workers) during a strike.
4. Cubes of meat marinated and cooked on a skewer usually with vegetables.
5. Any organic compound formed by adding alcohol molecules to aldehyde molecules.
6. A three-year law degree.
7. An unstable meson produced as the result of a high-energy particle collision.
8. A nucleotide derived from adenosine that occurs in muscle tissue.
9. One of the two main branches of orthodox Islam.
10. The 11th letter of the Greek alphabet.
11. Any of various strong liquors distilled from the fermented sap of toddy palms or from fermented molasses.
12. Designer drug designed to have the effects of amphetamines (it floods the brain with serotonin) but to avoid the drug laws.
20. Obvious and dull.
21. Having undesirable or negative qualities.
23. The syllable naming the fourth (subdominant) note of the diatonic scale in solmization.
25. The basic unit of money in Papua New Guinea.
26. An Arabic speaking person who lives in Arabia or North Africa.
27. Any of several small ungulate mammals of Africa and Asia with rodent-like incisors and feet with hooflike toes.
29. A river in north central Switzerland that runs northeast into the Rhine.
30. The act of scanning.
32. Ratio of the hypotenuse to the opposite side.
34. An edict of the Russian tsar.
38. A river in north central Switzerland that runs northeast into the Rhine.
39. A festival featuring African-American culture.
40. A state in northwestern North America.
43. Polish filmmaker (born in 1929).
44. Small genus of plants constituting the family Batidaceae.
47. A cord that is drawn through eyelets or around hooks in order to draw together two edges (as of a shoe or garment).
48. A European river.
49. A translucent mineral consisting of hydrated silica of variable color.
51. Mild yellow Dutch cheese made in balls.
52. A Chadic language spoken south of Lake Chad.
53. Wearing footgear.
56. Leaf or strip from a leaf of the talipot palm used in India for writing paper.
57. The basic unit of electric current adopted under the System International d'Unites.