LENZ ON ELECTRO-MAGNETISM. 615 
a) 
25 DEVIATIONS. 
Se Se eS 
ao 
SS | Side-A of Spiral to the | Side B of Spiral to the dividual | Complet 
salt meee | eth pole. Mueee  emeer «|X (Lee et A 
> ESE SS EEE EE 
Ee teadaer | enabor | End a of | End 6 of 
Ae Index. Index, Index. Index. 
18°5 18:5 19-8 20°5 19:33 4 
ig6 | 188 | 202 | 203 | 19-47 | 1940) 17) 69025 
Ee Se” ls iegminl ces Saar t| 3841 | 28 | 701-25 
=~ ae + 9 I a reas }| 5818 | 39 | 71225 
204) gra | sea | yoy | fos | Sy 2bh| soni | 50| zeo2s 
25{] 100 | 1128 | 1087 | 1022 | oper }] 10667 | 61 | 73425 
Seen ee ee | 
_ oa 
Or (—] or | 
ee ey I 
If we now apply the method of the least squares to this table, as we 
did to the first, we obtain 
£ = 3°97 and log. sin. 2 £ = 8:53944 
and with this value we obtain from formula (B.) the following devia- 
tions : 
heats be DEVIATIONS. 
: Difference. 
Convolutions. 
Calculated. | Observed. 
+ 013 
+ 0°59 
+ 0°94 
— 0°24 
— 1:00 
In this place also the calculation coincides well with the observation ; 
as I expected however to attain this coincidence still more completely, 
if I allowed the length of the conductors to remain the same for all the 
experiments, I made a second series of experiments similar to the 
above with another multiplier, where \, \', &c., remained always equal 
to one another ; this series has also been performed with more care 
than the others above-mentioned, since each of the numbers contained 
in the following table is the mean deduced from three observations, in 
which mean however I retained only one decimal place. The columns 
designated by 1, 2, 3, 4 are intended for the same purpose as the four 
columns in the former tables. 
