41. In the early 19th century a local spring was discovered to contain sulphurous properties and minerals, similar to those found in Harrogate. 42. Rescue parties which arrived on the scene were hampered by suffocating pumice dust and sulphurous fumes, and hot ashes on the ground. 43. Pelpi is known for its crystal clear spring water which has an alkaline-sulphurous quality and is renowned for its healing properties. 44. When whole mustard seeds are wetted and crushed, an enzyme is activated that releases pungent sulphurous compounds; but they quickly evaporate. 45. There was no extended chimney : clouds of toxic lead oxides and acid sulphurous fumes would have made the valley an unhealthy place. 46. A large amount of tailings sand lines the creek above the dams, leaching the metallic salts and having a strongly sulphurous smell. 47. The medieval writer Matthew Paris said Peter had " fox-like cunning " and that his " memory exudes a sulphurous stench ". 48. At Spencer, the so-called source pond was 120 degrees _ about 14 degrees above comfortable _ and colored by white sulphurous gunk. 49. *Walter William Bryant wrote in his book sulfur to cure infectious diseases brought on by the sulphurous vapours of the Aurora Borealis ." 50. Greek alchemists used what they called U??? ?????, meaning both " divine water ", and " sulphurous water ".