Leech Zoological Poster - Hirudo medicinalis
The European Medicinal Leech is a bloodsucking parasite, an amphibious freshwater animal that attaches itself to other animals to feed. A classic laboratory specimen, it has been used (as its name implies) for medicine since ancient times. According to old theories of medicine, the body has four humors in balance: Black Bile, Yellow Bile, Phlegm and Blood, and a disproportionate quantity of blood required blood-letting, a practice abetted by the Leech’s saliva, which is both an anti-coagulant and anesthetic. Depicted at the top of the poster are Leeches in nature, below which are shown details of the anatomy including the mouthparts and the body in section, showing the intestine including the ten pairs of cecal sacs, the dorsal vessel above the intestine and the ventral vessel with marrow below. This is one of a wonderful series of Scientific German Educational Charts, created in the 1950s and 60s and still produced by the original printer, internationally recognized for producing educational science charts since 1929. These charts are issued today using the original film and same methods as the first printing. They are printed without inscription for both classroom study and decorative purposes, with special attention paid to botanical detail and scientific accuracy.
Mounted on linen canvas stretched on wooden rods for display, each measures 44.5 inches tall by 32.25 inches wide (85 cm x 120 cm), and comes with a nylon cord strung through the top wooden rod for easy hanging. Each comes securely rolled and will be shipped to you in a sturdy mailing tube. These lovely botanical posters are large, colorful and impressive pieces of science decor. Add a touch of vintage classroom style to your home today!
Dimensions: 36"W x 46.5"H
Scientific Name: Hirudo medicinalis
Material: Linen backed canvas
Shipping Restrictions: None.