my 



The observed points liave again been marked O. In tabel 2, 3, 4, 

 and 5 the nnmberw are given. 



In order to test formula (3) still further it has been applied to 



the observations of Kamerlingh Onnes and Beckman. 



The tables 6, 7, 8, 9 have bee^ taken from Comm. N". 129 and 



R' 

 130 Phys. Lab. Leiden. In the columns — are given the observed 



R' 

 values, while under — are to be found the values calculated 



from the formula at the head of the table. 



T = lb' 



R' 



R' 



— 68.4 — 68.76 sin 5.45 (15.05— |jp|) 



7' = 20.3°. —=75.74-76.1 sin 5.09 (16.3— Ló|) 



R! 



T = 72°. — = 134 057 — 133.9 sin 2.166 (40 — \S^\) 



Rr, 



R 

 T = 90°. — = 102.34 — 102 Vo sin 2.04(42.15 — i.fpi) 

 R^ ' ' 



73 



Proceedings Royal Acad. Amsteidain. Vol. XVJ. 



