of Cyclically Vary my Temperature. 



Thermometer No. 5. Wire 0*003 inch diam. 

 R =0332. R 1 -E =0-1206. tf=l-52. 



293 



Percentage of 

 stroke. 



Observed Resist- 

 ance, ohms. 



pt. 



Temperature 

 on air-scale. 



Explosion 



1-444 



919 



1080 



10 



1-476 



949 



1120 



20 



1-451 



928 



1095 



30 



1-439 



918 



1080 



40 



1-395 



818 



1025 



50 



1-392 



879 



1020 



60 



1-333 



830 



955 



70 



1-268 



776 



880 



80 



1-238 



751 



855 



No further experiments were made with this wire as it 

 clearly did not attain the proper temperature. 



January 31st, 1895. 



Thermometer No. 4. Wire 0*0025 inch diam. 

 Air temperature 7*5° 0. Circulating water 57° C. 



R before, 0*562 ohm. 

 R after, 0*581 ohm. 



R 1 -R before, 0220 ohm. 

 R 1 -R after, 0-227 ohm. 



S before, 1*90. 

 d after, 1'90. 



Percentage of 



Observed Resist- 



pt. 



Temperature 



stroke. 



ance, ohms. 



on air-scale. 



10 



2-562 



893 



1100 



20 



2-595 



907 



1125 



30 



2-524 



876 



1080 



40 



2-445 



840 



1020 



50 



2-360 



802 



960 



60 



2-338 



792 



940 



70 



2-186 



729 



850 



80 



2151 



711 



825 



February 12th, 1895. 



Thermometer No. 5. Wire 0*002 inch diam. 

 Air temperature 7° C. Circulating" water 43° C. 



R before, 0-796 ohm. Rx-R =0283 ohm. 



Percentage of 



Observed Resist- 



pt. 



Temp, on air-scale. 



stroke. 



ance, ohms. 



£=1-22. 



10 



3662 



1012 



1160 



20 



3616 



996 



1140 



30 



3-477 



947 



1075 



40 



3352 



907 



1020 



50 



3-253 



868 



970 



60 



3-120 



821 



910 



80 



3-071 



804 



890 



