CONTENTS. 



COMPARISON OF THE THERMOIHETRICAL SCALES. 

 (The figures refer to the folio at the Tiottom of the page.) 



Table 1. Comparison of Fahrenheit's Scale with the Centigrade and Reau- 

 mur's, full degrees, from +212° to —39°, . . . 8 



" 11 Comparison of the Centigrade Scale with Reaumur's and Fahren- 

 heit's, full degrees, from + 100° to +50°, . . . . .10 



" III. Conjparison of Reaumur's Scale with Fahrenheit's and the Centi- 

 grade, full degrees, from +80° to +40°, .... 10 



" IV. Conversion of Degrees of Fahrenheit into Centigrade Degrees, for 



every tenth of a degree, from + 122° to — 76° F., . . .13 



" V. Conversion of Degrees of Fahrenheit into Degrees of Reaumur, for 



every tenth of a degree, from + 122° to — 38° F., . . . 18 



" VI. Conversion of Centigrade Degrees into Degrees of Fahrenheit, for 

 every tenth of a degree, from +50° to — 54°, and from + 100° 

 to +89° C, 25 



" VII. Conversion of Centigrade Degrees into Degrees of Reaumur, for eveiy 



tenth of a degree, from +40° to —40° C, .... 28 



" VIII. rinnversion of Degrees of Reaumur into Degrees of Fahrenheit, for 



every tenth of a degree, from +40° to — 40° R,, . . .30 



" IX. Conversion of Degrees of Reaumur into Centigrade Degrees for every 



tenth of a degree, from +40° to —40° R., .... 32 



" X. Value of any number of Degrees of Fahrenheit, expressed by a cor- 

 responding number of Centigrade Degrees, . . . . .34 



" XI. Value of any number of Degrees of Fahrenheit, expressed by a cor- 

 responding number of Degrees of Reaumur, . . . 34 



'' XTI. Value of any number of Centigrade Degrees, expressed by a cor- 

 responding number of Degrees of Reaumur, . . . .34 



' XIII. Value of any number of Centigrade Degrees, expressed by a cor- 

 responding number of Degrees of Fahrenheit, . . . .35 



" XIV. Value of any number of Degrees of Reaumur, expressed by a cor- 

 responding number of Centigrade Degrees, . . . . .35 



*' XV. ■ Value of any number of Degrees of Reaumur expressed by a cor- 

 responding number of Degrees of Fahrenheit, . . . .35 

 A 3 



