| Rating | Solver | Clue |
|---|---|---|
| GEYSERS | Hot springs | |
| BATHS | Hot springs | |
| THERMAL | Describing hot springs | |
| THERMAE | Springs or baths of warm or hot water. | |
| VULCANOLOGY | The science which treats of phenomena due to plutonic action, as in volcanoes, hot springs, etc. | |
| SASSOLINE | Native boric acid, found in saline incrustations on the borders of hot springs near Sasso, in the territory of Florence. | |
| BATH | A city in the west of England, resorted to for its hot springs, which has given its name to various objects. | |
| GEYSERITE | A loose hydrated form of silica, a variety of opal, deposited in concretionary cauliflowerlike masses, around some hot springs and geysers. | |
| DEPOSIT | ...as, a deposit in a flue; especially, matter precipitated from a solution (as the siliceous deposits of hot springs), or that which is mechanical... | |
| BORAX | ...al springs, and is made from the boric acid of hot springs in Tuscany. It was originally obtained from a lake in Thibet, and was sent to Europe ... | |