Holborn and Day — Melting Point of Gold. 147 



Table I contains the temperature t (in microvolts and degrees) 

 of the observed solidifying points F and melting points M. 

 Under i is contained the number of amperes carried by the 

 oven coil during the observations. 



The various values of t show no systematic differences and 

 the final mean is 1063-5°. 



The forms of the time-curves, some of which are given in 

 Table II, vary somewhat under the different conditions ; the 

 measurements in the oxygen atmosphere being especially con- 

 spicuous in this particular. 









Table II. 















" Time-C 



hrves " (MY). 













Gold in 



Graphite, 



Gold 



Copper 





Gold in 



Graphite. 



Atmosphere of C0 2 . 



Atmosphere of O. 



in Air. 

 * 



Min. 



F 



M 



F 



M 



F 



M 



F 



1... 



10331 



10084 



10402 



10117 



10366 



10027 



10590 



2___ 



10261 



10150 



10346 



10166 



10276 



10074 



10470 



3... 



10209 



10190 



10298 



10192 



10223 



10101 



10352 



4,.. 



10207 



10194 



10246 



10195 



10205 



10144 



10281 



5... 



10203 



10195 



10200 



10197 



10201 



10170 



10217 



6... 



10200 



10195 



10199 



10194 



10199 



10198 



10204 



7... 



10199 



10195 



10199 



10194 



10199 



10254 



10212 



8. ._ 



10198 



10195 



10199 



10194 



10198 



10238 



10212 



9... 



10197 



10197 



10198 



10194 



10196 



10222 



10212 



10. ._ 



10197 



10199 



10198 



10196 



10193 



10205 



10212 



11... 



10197 



10203 



10198 



10196 



10194 



10202 



10212 



12... 



10196 



10212 



10198 



10197 



10193 



10201 



10212 



13... 



10196 



10222 



10198 



10198 



10194 



10202 



10212 



14... 



10195 



10231 



10198 



10199 



10192 



10203 



10212 



15... 



10194 



10240 



10197 



10200 



10191 



10203 



10212 



16... 



10192 



10248 



10198 



10201 



10189 



10203 



10212 



17_._ 



10188 



10257 



10197 



10202 



10186 



10208 



10211 



18... 



10178 



10272 



10197 



10205 



10184 



10216 



10210 



19... 



10070 



10400 



10197 



10206 



10184 



10212 



10208 



20... 



9995 





10196 



10205 



10183 



10222 



10204 



2L_._ 











10196 



10209 



10174 



10230 



10195 



22... 











10195 



10204 



10159 



10360 



10176 



23... 









10195 



10202 



10065 





10027 



24... 









10194 



10214 









25... 









10192 



10296 









26 ... 









10190 



10400 











27... 











10186 













28... 











10177 













29... 











10083 













The stationary temperature characteristic of the change of 

 state is less well-defined in this case, the temperature in obser- 

 vations of the melting point often rising uninterruptedly to a 



