| Common fertilizer ingredient | 28 |
| Carbamide | 9 |
| Compound used as fertilizer | 27 |
| Common fertilizer compound | 26 |
| Resin component | 15 |
| Powder used in making plastics | 30 |
| Pee compound used in fertilizer | 31 |
| Nitrogenous waste | 17 |
| Leaking substance? | 18 |
| Compound in pee | 15 |
| Component used in making plastics and fertilizer | 48 |
| Chemical in fertilizer | 22 |
| Chemical compound in fertilizers and plastics | 46 |
| Of a nitrogenous compound | 25 |
| Of a fertilizer chemical | 24 |
| Containing carbamide | 20 |
| Skin rash | 9 |
| Plant rust | 10 |
| Like carbamine | 14 |
| Poisoning of the blood | 22 |
| Medicinal tropical plant | 24 |
| Genus of herbs | 14 |
| Actress Mary and family | 23 |
| Agents: Suffixes | 16 |
| Actress Mary et al. | 19 |
| Actress Mary and musician Midge | 31 |
| Combine: Suffix | 15 |
| Chemical suffix replaced by ide | 31 |
| Leaking tube? | 13 |
| Bowling ball material, often | 28 |
| What inline-skate wheels are made of | 36 |
| Substance in Spandex | 20 |
| Solvent also called ethyl carbamate | 35 |
| Skateboard wheel material | 25 |
| Insulation ingredient | 21 |
| Foam material | 13 |
| Foam ingredient | 15 |
| Foam compound | 13 |
| Bowling-ball material | 21 |
| Leak source? | 12 |
| Hank's narrow body part, on "King of the Hill" | 60 |
| Pertaining to pee | 17 |
| Pertaining to #1 | 16 |
| Nobelist in Chemistry: 1934 | 27 |
| Nobel chemist | 13 |
| Discoverer of heavy hydrogen | 28 |
| 1934 chemistry Nobelist | 23 |
| U. S. chemist | 13 |
| U.S. chemist who discovered deuterium | 37 |
| Nobel chemist: 1934 | 19 |
| Manhattan Project scientist Harold | 34 |
| Chemistry Nobelist: 1934 | 24 |
| Chemistry Nobelist Harold | 25 |
| 1934 Nobelist | 13 |
| 1934 Chemistry Nobelist Harold | 30 |
| Nobel chemist in '34 | 24 |
| Nobel chemist Harold | 20 |
| Heavy hydrogen discoverer | 25 |
| Harold the chemist | 18 |
| Famous chemist | 14 |
| Famed chemist | 13 |
| Deuterium's discoverer | 26 |
| Deuterium discoverer Harold | 27 |
| Deuterium discoverer | 20 |
| Chemistry Nobelist, 1934 | 24 |
| Chemistry Nobelist in 1934 | 26 |
| Chemist Harold | 14 |
| Author of "One World or None" | 39 |
| Atomic physicist | 16 |
| Atom-pioneer Harold | 19 |
| A Nobelist in 1934 | 18 |
| U. S. chemist and family | 24 |
| City in SE Turkey | 17 |
| City once called Edessa | 23 |
| Honoré d'___ | 19 |
| Ulan Bator's old name | 25 |
| Ulan Bator, formerly | 20 |
| Old name of Ulan Bator | 22 |
| Old name for Ulan Bator | 23 |
| Former name of Ulan Bator | 25 |
| Early name for Ulan Bator | 25 |
| City renamed Ulan Bator in 1924 | 31 |
| Suggest strongly | 16 |
| Itch | 4 |
| Solicit strongly | 16 |
| Strongly recommend | 18 |
| More than suggest | 17 |
| Primal impulse | 14 |
| Press for | 9 |
| Sudden impulse | 14 |
| Primal calling | 14 |
| The munchies, e.g. | 18 |
| Inner drive | 11 |
| Advise strongly | 15 |
| Primal desire | 13 |
| It may be irresistible | 22 |
| Encourage heartily | 18 |
| Do some prodding | 16 |
| Advocate forcefully | 19 |
| Addict's bugbear | 20 |