Across
- 2. relating to sea trade
- 4. helped to navigate the seas in daytime
- 6. made from iron, but less brittle
- 7. ruling families
- 11. to throw something very far
- 12. a type of ship
- 13. officials of proven merit ruled
- 15. used for writing upon
Down
- 1. a small dose of a disease for innoculation
- 3. to vaccinate
- 5. building designed for looking at stars and planets
- 8. a type of dishware, seethrough like glass
- 9. other name for barter
- 10. made of saltpeter and other explosive chemicals
- 14. name of foreigner's dynasty