In the list below, an asterisk indicates a proper name and parentheses around a letter mean that it must be omitted before the word will fit in the grid. The thirteen omitted letters spell BOUSTROPHEDON, "as the ox plows," which is how words are entered in the grid above--across words from left to right on the first line, then from right to left on the second, then again from left to right on the third, and so forth; down words from top to bottom in the first column, then from bottom to top in the second, then again from top to bottom in the third, and so forth.

Across

1. MAR(B)LE
2. TONSURE
3. C(O)HERENT
4. T(U)MULT
5. ISOLATES
6. COBRA
7. EPEE
8. NOTICE
9. PLACEBO
10. CURE
11. BRIDE
12. TILED
13. STATUS
14. TARRY
15. REAR
16. (S)PACE
17. MEN(T)AL
18. *PONCE
19. BENEFIT
20. PLUM
21. (R)IDICULED
22. AN(O)INT

Down

1. MULTI(P)LE
2. MEDICINE
3. DICOT
4. MARTINET
5. SCAM
6. ULULATE
7. PESTLE
8. NOEL
9. DAPPLED
10. *PORTIA
11. PLET(H)ORA
12. ECRU
13. ANTA
14. NI(E)CES
15. BEATEN
16. SHERBET
17. REFINE(D)
18. B(O)YAR
19. OBSCURE
20. CO(N)CURRENT