142 



APPENDIX. 



Dr. Irving (none of thofe fent ont having given fatisfa£tion) 

 was let down, faftened to the line, about two fathom 

 from the lead. A thermometer plunged into the water 

 from the bottom flood at forty degrees : — in water from 

 the furface at fifty-five degrees ; — in the fhade, the heat 

 of the air was fixty-fix degrees. 



It appears from the Experiment of July ift, in which the 

 Inftrument was compared with Fahrenheit's Thermometer at 

 different Heats, that the Experiment cannot be depended on 

 to lefs than two or three Degrees, as the Refults drawn from 

 the different Comparifons would differ by about five Degrees. 



Experiments 



