478 



Prof. Silas W. Holman 



on 



of the alloys. Table V. gives the percentage deviations of 

 these alloys from the exponential equation (data— equation), 

 and Table IV. shows the values of m, n, and /3 for those 

 equations. 



Table V. 







Holbc 



rn and Wien. — Comparison oi 



* Alloys 



;. 





t. 



D. 



A. 



C. 



E. 



R 



a. 



H. 



Average. 





,°0. 



154 





-4-8 





-40 





-5-0 



-4-4 



-4-5 





273 



-09 



-2-6 



-2-7 



-22 



-2-3 



-3-5 



-2-3 



-2-6 





379 



+21 



-0-57 



-0-80 



-060 



-1-3 



-0-60 



-025 



-067 





482 



4-2-6 



4-0-15 



-003 







-0-60 



4-0-22 



40-46 



-003 





584 



+0-9 



-003 



4-0-19 



4-0-08 



+0-13 



4-0-30 



-003 



4-0-02 





680 



-0-30 



4-0-07 



4-0-13 



4-0-13 



4-0-12 



-0-16 



-0-26 









774 



-019 



-0-06 



-0-08 



-0 02 



-0-12 



-0-42 



-0-46 



-019 





862 



+0-23 



4-0-20 



4-0-20 



4-0-20 



4-009 



4-0-15 



-0-11 



4-0-12 





952 



+0-20 



-0-10 







-0-11 



-0-15 



4-0-09 



-0-24 



-0-08 





1038 



4-012 



-0-18 



-o-io 



-0-21 



-0-27 



4-0-04 



-0-14 



-016 





1120 



-015 



-006 



-0-09 



-0 02 



4-0-10 



4-001 



4-0-22 



-0-01 





1200 



40 02 



4-007 







4-0-10 







4-004 







4-0-03 





1273 





4-0-67 



+0-70 



4-0-80 



+0-80 



4-043 



4-1-00 



4-0-73 





1354 





4-0-38 



4-0-60 



4-0 67 



4-051 



4-0-30 



4-1-00 



4-0-58 





1445 





-0-80 



-0-38 



-0-50 





-0-90 



-0-40 



-0-60 



a 



d. 400-1200 



0-52 



0-15 



0-09 



010 



012 



016 



0-21 



007 



a 



d. 400-1445 





0-25 



Direct from 



Air Th. 



0-21 



0-24 



(0-24) 



0-23 



0-36 





Chassagny and Abraham Data*. — The apparently very 

 careful measurements of these observers cover a range of 0° 

 to 100° C. with observations at 25°, 50°, and 75° only. The 

 range is too short and the intervals are too great to render 

 the work of much service in testing a general formula, but if 



Table VI. 



Couple. 



5,100 



S e. 



4°- 



V 25 „ 



Fe-Cu 



1093-3 



895-1 



11230 



1685-1 



864-9 



708-9 



885-6 



1278-9 



604-8 

 496-1 

 6174 

 859-9 



315-5 

 259-1 

 321-1 

 432-1 



Fe-Pt Eh 



Fe-Ag 



Fe-Pt 



* Chassagny et Abraham, Ann. de Chim. et de Phys. xxvii. p. 355 

 (1892). 



