Historical information
Glycerin is used as a laxative. It works by causing the intestines to hold more water, which softens the stool. Glycerin rectal is used to treat occasional constipation or to cleanse the bowel before a rectal exam or other intestinal procedure. (https://www.drugs.com/mtm/glycerin-rectal.html)
Physical description
Metal and glass syringe with cork plunger [125.2], used for rectal irrigation. In original manufacturers box which is printed, "Glycerine Syringe"/ For the relief and cure of constipation". Box [125.3].