Richard Sharp. John Sharpe. 183 



A paper ' On the Nature and Utility of Eloquence/ by 

 Mr. Richard Sharp, 1 shows the importance of that art in 

 the field of Probable evidence. One is tempted to think here 

 of Dr. (now Cardinal) Newman's 'Grammar of Assent/ 

 and that wide region between demonstration and fancy in 

 which character is formed and lives. 



An account of some Experiments to ascertain whether the 

 Force of Steam be in proportion to the Generating Heat. 

 By John Sharpe. 



On this Dr. Bottomley says : 



1 As a result of an experimental inquiry he came to the 

 conclusion that when heat is applied to water the water 

 heats through the several degrees of the thermometer 

 nearly in equal times ; and when in a closed vessel, the 

 same rule holds good, as well above the boiling point as 

 below it. In another series of experiments he condensed 

 in a still steam at different degrees of temperature; he 

 concludes from the results that steam at the common 

 boiling temperature, or within a few degrees above it, gives 

 out as much latent heat as steam sent over at a much 

 higher temperature, and most probably at any temperature 

 whatever. On this paper Dalton has a note. He thinks it 

 remarkable that the temperature of the water in the boiler 

 increased in such proportion to the time of boiling. He 

 would have expected the water to heat most quickly at 

 first. He does not doubt the accuracy of the experiment, 

 but explains it by supposing the common thermometric 

 scale inaccurate ; the degrees of the mercurial thermometer 

 are progressively too small as they ascend.' 



1 Vol. iii. p. 307. 



