Subject
- Le Fèvre, Nicaise, 1610-16694
- Leaves1
- Lectures and lecturing1
- Lenses3
- Letter3
- Lettsom, John Coakley, 1744-18154
- Leucite1
- Lice1
- Licorice-root1
- Limestone2
- Lion1
- Lizards1
- Llull, Ramon, 1232?-13161
- Locke, John, 1632-17041
- Locusts1
- Lotus corniculatus1
- Louis XIV, King of France, 1638-17152
- Luminescence1
- Lunar craters1
- Lunar surface1