Subject
- Ireland9
- Ireland--Leinster1
- Ireland--Wicklow Mountains1
- Iridium1
- Iron ores1
- Iron-works4
- Islands10
- Islip, Adam, -163920
- Jābir ibn Ḥayyān1
- Johnson, Thomas, -164420
- Kidneys--Calculi1
- Kircher, Athanasius, 1602-16802
- Laboratory animals--Surgery1
- Ladders3
- Lambspring2
- Lamps2
- Lantern projection1
- Lapis lazuli1
- Lavoisier, Antoine Laurent, 1743-17945
- Lavoisier, Marie-Anne-Pierrette, 1758-18361