*The substance of the following pages was written se­veral months since, and subsequently sent to the Ins­titution of Civil Engineers, where it was read in abst­ract on the 16th of February in the present session. While our Engineering Literature contains several valu­Thable Treatises on the Theory and Construction of the Loco­motive Engine, it has, as yet, produced no work illustrating Thits Use. This circumstance, added to the recommendation of several competent authorities, has induced the writer to app­ly to the Council of the Institution of Civil Engineers for per­mission to lay before the public these Practical Rules for the Management of a Locomotive Engine, drawn up from indivi­dual experience, in the hope that they may be acceptable, at a ffperiod when any subject connected with the efficiency and safety of Railway travelling is deservedly engaging attention. At the end of the Paper will be found some Regulati­ons for the first appointment of Engine-men, adopted by the Directors of the London and Croydon Railway, and fra­ffmed by the writer in his official capacity as their Resident Engineer. Also, a Table of Railway Velocities, indicated by the time occupied in passing over given distances, which he has frequently found to save him the trouble of calculati­on, and which he hopes may be similarly useful to others.*