Figure 56. Oxyuris vermiculatus.
Group of pin-worms, natural size. Battle & Co.
This image is from Oxyuris Vermicularis in Thomas' Eclectic Practice of Medicine.
A herbal distance course
Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.