31. Niobium is used mostly in alloys, the largest part in special steel such as that used in gas jet and rocket engines. 32. It never lacked for warmth : Belli also had working gas jets in the marble fireplace that could burn a make-believe log. 33. The 8-day clock mechanism used a weight descending in the column originally the four clock faces were lit by small gas jets . 34. It directs flames, fed by four gas jets mounted under the doors, out both sides of a car without singeing the vehicle itself. 35. A new system of heating was also created, going from the original direct gas jets to the current indirect high velocity air system. 36. Some of the original gas jets remain, and an original gas fixture, unused since then, still hangs in the base of the tower. 37. The first chandelier was remarkable, with 14, 000 hand-cut French prisms catching the light of 260 gas burners, ignited by a single traveling gas jet . 38. The station was the first public area in Scotland to be lit by electricity, although 464 gas jet lamps were provided as an emergency standby. 39. Original door and window furniture survives and some light fittings including gas jets above the staircase and in the rear office on the first floor. 40. When the pilot is on, the electricity stops flowing through the coil ( since it's done its job ), and the main gas jet turns on.