Study the digestive, circulatory, reproductive, and nervous system of the earthworm. Plain preserved dissection specimen. Earthworm species is Lumbricus terrestris (nightcrawler).
Note: Dissection specimens are initially preserved with a formaldehyde solution, the best animal tissue fixative. The formaldehyde is then displaced with water and then with a glycol solution to produce a moist, low-fume specimen which can be stored almost indefinitely. We recommend that you use specimens within one year of purchase to ensure the best tissue quality. Specimen discoloration over time is normal and does not indicate decay.
Store your specimens at normal room temperature--refrigeration is not required. Storage in attics or garages at high temperatures will damage the specimens. Once opened, specimens can be resealed in a Zip-lock bag to prevent them from drying out for later use.
These are some of the largest and best preserved specimens I have found anywhere. The students are able to see the inside structures very well. Odor was minimal.
Earth Worms
By: Anonymous
May 23, 2008
Large and preserved well. Worms used from elsewhere were dried and small, but these were very good quality.
Fun!
By: Alison Harrell
May 10, 2008
Good sized worms - used for my 7th graders and the kids were able to see all the organs very well - it's impressive to see that worms are more than just 'goo' inside! This was their first dissection and they loved it! I love HST's service and products!
Great earthworms!
By: Anonymous
February 11, 2008
Earthworms were large - organs easily viewable. Great for jr. high level!
good first dissection
By: Anonymous
February 5, 2008
The earthworms were in good condition, not smelly at all, and large enough to see the anatomy pretty well. My boys are 11 and 12, and neither wanted to dissect anything, but both found the dissection very interesting once they got started.
Huge Worms
By: Michele Lawson
October 25, 2007
I ordered these worms in addition to the lubber grasshoppers and my students were impressed with the huge size of these worms. Dissection was a breeze and the organs were extremely visible because of the size, preservation method, and the overall great condition of the specimens.
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