1. Wash thoroughly in green soap and water. Rinse several times. Soak
in ether 24 hours. Boil in sterile water 20 minutes. Preserve in
alcohol, 95 per cent.
2. Soak in bichlorid solution 1: 1000 for 6 hours. Then boil 3 minutes
in sterile water. Place in alcohol, 50 per cent.