( 349 ) 
determined, whilst to A, B and C the value, mentioned at the head 
of each series is allotted, then we may from all these calculate Z 
(2d column). The £’s measured by TrGersTEDT and WALLER, are 
indicated in the third column, whilst the fourth column g gives the 
differences between calculated and measured values. Underneath the 
series are placed 2g’, the sum of the squares of the errors and 
also the mean error of a single observation. 
TABLE I, calculated from the numbers of TABLE II, calculated from' the numbers of 
A. WALLER. (Brain 1895, pag. 209). R. TIGERSTEDT. Versuch 6.1 Indirecte 
Reizung vom Nerven aus; absteigende 
Schliessungsinductionsschlage. 
„6803 6.65 | + 0.0303 
„1132 6.75 | + 0.0232 
Fig. 1 
A = 12.838 A = 6.87456 
B= 6.4029 == 013016 
Ore C = 62.59855 
bar | ‘ 
R Eeale. [|E meas. v Ne | E calc. |Hmeas Q. 
1.65 3.935 4. | — 0.065 65. 1.8454 1.8 | + 0.0454 
4.79 9.205 9. + 0.205 70. 4.2512 4.4 | — 0.1488 
1.87) 11.692 12. — 0.310 75.| 5.5061 5.4 | + 0.1061 
2,13) 12.426 12.5 | — 0.174 80. 6.1619 6.1 | + 0.0619 
2.32) 12.716 12.5 | + 0.216 85.! « 6.5022 6.6 | — 0.097 
6 
6 
| 
= 0 2, == 0.2193 | 
Om = 0.3310 = 0 2, = 0.050318 
Um = 0.11216 
