| Four of the oldest monasteries in the world still survive in the natron Valley. |
| Behind her, in baskets were ivory tusks, gold, blocks of incense, natron salts and uncut precious stones. |
| Gradually the yellow skin preserved by the natron began to appear through the cross-hatchings of the bandages. |
| In alkaline lakes, natron and trona are found in the United States, Africa, and South America. |
| The strip of cloth was about a foot long and smelled faintly of natron and resin. |
| The corpse was filled with spices, drenched in a bath of natron, wound with bandages and thus transformed into a mummy. |
