believed this gasoline-fueled model to have been the first 

 model locomotive ever built with a flash boiler. 



A letter from James C. Crebbin in thejuly 27, 1933, issue 

 of the British journal "The Model Engineer and Practical 

 Electrician," contains the following statement: 



When I was chairman of Messrs. Carson and Co., the late Mr. 

 James Carson and I collaborated in the development of flash 

 steam model locomotives. 



With the exception of the very small model L. & N. W. "Experi- 

 ment" loco which had only one coil, and a methylated vaporising 

 burner, the boilers had longitudinal coils running the full length 

 of the boiler, and were fired by means of a Carson Primus type 

 burner. The pressure container was a drum inside the tender, and 

 was surrounded by water in the usual square or oblong tank. This 

 water fed the geared pump, which was driven from the second 

 tender axle. 



The most successful of this type was a %-inch-scale 4-4-0 Cale- 

 donian, built for Sir Henry Lopes. Mr. Carson always declared 

 that this engine was the fastest he had ever seen, and during tests 

 he carried out, on Sir Henry's track, never dared to give the 

 model more than half-throttle, no matter what load the engine 

 was hauling. 



Mr. Wardlaw, of New York, and a "M. E." Exhibition Cham- 

 pionship Cup Holder, has a similar locomotive which, I believe, 

 is destined for exhibition in some museum in U. S. A. 



Figure 71 . — Operable model of a British locomotive of about 1 905. 



90 



