Subject
- Horses1
- Horseshoeing1
- Horseshoers1
- Hot air balloons--Design and construction1
- Human anatomy1
- Hydraulic machinery1
- Hydrography1
- Industrial arts1
- Inscriptions, English (Old)1
- Intoxication1
- Ireland--Leinster1
- Ireland--Wicklow Mountains1
- Iridium1
- Iron ores1
- Jābir ibn Ḥayyān1
- Kidneys--Calculi1
- Laboratory animals--Surgery1
- Lantern projection1
- Lapis lazuli1
- Lavoisier, Marie-Anne-Pierrette, 1758-18361