THE STEAM-ENGINE. 



(FIFTH LECTURE.), 



Railways. — Effects of Railway Transport.— History of the Locomotive Engine. — Construction of 

 Locomotive Engine by Blinkinsop. — Messrs. Chapman's Contrivance. — Walking Engine. — Mr. 

 Stephenson's Engines at Killingworth. — Liverpool and Manchester Railway. — Experimental 

 Trial of the " Rocket," " Sanspareil," and " Novelty." — Method of Subdividing the Flue into 

 Tubes. — Progressive Improvement of Locomotive Engines. — Adoption of Brass Tubes. — De- 

 tailed Description of the most Improved Locomotive Engines. — Power of Locomotive Engines, 

 — Position of the Eccentrics. — Pressure of Steam in the Boiler. — Dr. Lardner's Experiments in 

 1838. — Resistance to Railway Trains. — Dr. Lardner's Experiments on the Great Western Rail- 

 way.— Experiments on Resistance. — Restrictions on Gradients.— Compensating Effect of Gradi- 

 ents.— Experiment with the " Hecla." — Disposition of Gradients should be Uniform. — Methods of 

 surmounting Steep Inclinations. 



