Refine by:
-
▾ Subject
- ASTRONOMY (31)
- Marine navigation (20)
- Longitude (19)
- Geographical exploration (13)
- Nautical instruments (12)
- Navigational aids (9)
- SCIENCE (7)
- Astronomical Observatories (5)
- Colonial administration (5)
- Discoveries in geography (5)
- Navigation (5)
- Transit of Venus (4)
- observatories (4)
- scientific instruments (4)
- Horology (2)
- Jupiter (Planet) (2)
- Legislation (2)
- TRAVEL (2)
- Aids to navigation (1)
- Magnetism (1)
- Maps (1)
- Navigation (science) (1)
- Time Measuring Instruments (1)
-
▾ Date
- 1700s C.E. (15)
- 1800s C.E. (26)