APPENDIX 



(p. 84). The Marquis of Worcester's steam engine. The 

 original account appeared, as stated, in the Marquis of Worces- 

 ter's Century of Inventions, published in 1663. 



(p. 92). Newcomen's engine. As stated in the text, the 

 account of Newcomen's engine is quoted from the report of the 

 Department of Science and Arts of the South Kensington Museum, 

 now officially known as the Victoria and Albert Museum. 



(pp. 107-109). James Watt. The characterization of Watt 

 here given is taken from an article in an early edition of the Edin- 

 burgh Encyclopaedia published about the year 1815. 



CHAPTER VI 



THE MASTER WORKER 



(p. 112). High-pressure steam. The work referred to is 

 Leupold's Theatrum Machinarum, 1725. 



(p. 122). Rotary Engines. The quotation is from the report 

 of the Victoria and Albert Museum above cited. 



(pp. 127, 128). Turbine engines. The quotation is from 

 an anonymous article in the London Times, August 14, 1907. 



(pp. 129, 130). Turbine engines. The quotation is from 

 an article on Motive Power Appliances in the Twelfth Census 

 Report of the United States, vol. X., part IV., by Mr. Edward H. 

 Sanborn. 



CHAPTER VII 



GAS AND OIL ENGINES 



(pp. 135, 136, 137). Gas engines. Quoted from the report of 

 the Victoria and Albert Museum above cited. 



(pp. 141-144). Gas engines and steam engines in the United 

 States. Quoted from the report of the Special Agents of the 

 Twelfth Census of the United States, 1902. 



(pp. 146, 147). The Svea heater. From an article by Mr. 

 G. Emil Hesse in The American Inventor for April 15, 1905. 



CHAPTER VIII 



THE SMALLEST WORKERS 



In connection with this chapter the reader will do well to re- 

 view various earlier portions of the work outlining the general 



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