Across
- 5. the 19th century
- 6. 14th to the 16th century
- 7. first female doctor in the U.S
- 9. the 17th century
- 10. invented the x-ray machine
Down
- 1. created smallpox vaccine
- 2. inserting needles into the skin
- 3. legendary founder of chinese civilization
- 4. invented the stethoscope
- 8. developed the idea of circulation