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