278 Upon Caloric as a cause of Galvanic Currents. 



Positive current and caloric 

 moving 



togetlier 

 H fif 



cold. 



+ 



ni opposition, 

 <^ 'M. 



cold. 

 + 



Remarks. 



Bismuth 



and 

 Antimony 

 Arsenic. 

 Platinum. 

 Copper 

 Silver. 

 Lead. . 

 Tin. . . 

 Zinc. . 

 Gold. . 

 Iron. . 

 Mercury. 

 Nickel. . 



B. & B. ^ 



A. &B. 

 A. & B. 

 P. &B, 



C. &B. 

 S. &B. 

 L. &B. 

 T. &B. 

 Z. &B. 



I. &B. 



M. & B. 

 N. &B. 



The combination of 2nd column most usu- 

 al: but it appears manifest that as soon 

 as the Bismuth is heated sufficiently to 

 give oif a current of caloric to the other 

 metals, it loses its regulating power. 



Antimony 

 and 



Arsenic. . . 

 Platinum. . . 

 Copper. . . . 

 Silver. . . . 



Lead 



Tin 



Zinc 



Gold 



Iron 



Mercury. . 



Nickel. . 



Arsenic 



and 

 Platinum. 

 Copper. . 

 Silver. . 

 Lead. . . 

 Tin. . . . 

 Zinc. . . 

 Gold. . . 

 Iron. . . 



Mercury. 

 Nickel. . 



A. & A. 



1. A. & A, 



2. A, & A. 



1. P. & A. 



2. A. & P. 



1. A. &C. 



2. C. & A. 



1. A. &S. 



2. S. & A. 



1. A. &L. 



2. L. & A. 



1. A. &T. 



2. T. & A. 



1. A. &Z. 



2. Z. & A. 

 1. 



2. 



1. A.&I. 



2.1. & A. 



A. & M. 



A. &N. 



A. & A. 



A. &P. 

 A. &C. 

 A. &S. 

 A. &.L. 

 A. &T. 

 A. &Z. 



A.&I. 

 A. & M. 



A. &N. 



A. &M. 



A.&N. 



No. '2. first column, most usual and power- 

 ful ; hence it is obvious that the elemen- 

 tary state of the antimony regulates the 

 currents. 



A. &M. 



A.&N. 



Combination in 2nd column most usual and 

 powerful ; in the 1st combination, the an- 

 timony governs, in the 2nd the mercury. 



In the combination of 2nd column, the 

 nickel governs the current of ^m--\ v^ 



In all these cases the elementary condition 

 of the arsenic regulates the galvanic cur- 

 V rents. The galvanometer does not indi- 

 cate any result for the combinations of 

 the 2nd column. 



In the combination of the 2nd column, the 

 mercury regulates the galvanic currents. 



In the combination of the 2nd column, the 

 nickel regulates the galvanic currents. 



