Possible Clues:

• Salt used in thyroid treatments
• One made this chemical with ten, did 'e?
• Divine cowgirl, we hear, passed the salt
• Compound that is confining revolutionary Carthaginian queen
• Chemically, the beautiful heifer died after ten
• Silver ___ (cloud seed)
• Salt of element 53
• I made the salt that 10 1 downed with, by the sound of it
• Silver compound
• Having been made a little cowlike, seems the lovely girl died of assault, by the sound of it