Early in their inception, elaborate regulations were drawn up by the organisers of the original local undertakings, of which a copy, issued by the Oswestry and Newtown Company, as adopted "at a meeting of the Board of Directors, held on Saturday, the 25th February, 1860," and preserved among the papers of the late Mr. David Howell of Machynlleth, gives some interesting indication. It is bound in vellum, fitted with a clasp, and adorned within with a series of woodcuts, descriptive of the old-day signalman, clad in tall hat, tail coat and white trousers, explanatory of the hand signal code, with flags, which preceded the more general use of the modern signals, controlled from a signal box. Following the precept, made familiar by the nursery rhymes of our childhood, it informs us that "RED is a signal of DANGER, and to STOP. GREEN is a signal of CAUTION, and to GO SLOWLY. WHITE is a Signal of ALL RIGHT, and to GO ON. As an additional precaution, should no flag be handy, it warns drivers that "anything moved violently up and down or a man holding both hands up is a sign of danger." Some of these early regulations were extremely primitive. For instance, long before the scientific system of the block telegraph and the tablet were thought out, it was deemed sufficient to ordain that "On a Train or Engine stopping at or passing an intermediate station or Junction, a STOP Signal must be exhibited for FIVE minutes, after which a CAUTION Signal must be exhibited for FIVE minutes more." After that, apparently, any train might proceed--and take its risk of the one in front having reached the next signalling point! At level crossings at any distance from the signalman, the gate-keeper was advised to "ring a small hand-bell, or use a whistle to call the attention of the signalman, who must then put up his 'Danger' signals." [Picture: An Early Cambrian Passenger Engine. Original Form (top), As Re-built (bottom)]