342 



Mr. 0. A. Chant on tlw Variation of 



Table of 



33 



o 



Distance, in centimetres, of minima 



Wire Wire Wire 



860 cms. 850 cms. , 840 cm 



1.^...710 



25 

 cms. 



30 



ems. 



35 



40 



cms. 



148... 735? 150.. 740? 



1^5.. .750 



50 



cms. 



Wire Wire Wire Wire 



530 cms. 820 cms. 810 cms. 800 cms 



Wire 

 790 cms. 



187. 



..635 . 



.780 





655 . 



.781 





625?. 



..780 



187 







193 









645 . 



..781 



188. 



..635 . 



.780 



185. 



.618?. 



..780 



182 







190. .675. .820 198 

 200 



W8..Mo188..Cy20?. .790 198.. .638 ...71 

 W5..$mi90..6b0 ...790 



180 655.. .780 



ISO 630.. .780 



190 



MEAN 



187-1 



130... 230... 585... 78$j 



U0... 220... 620... 780 



130 



150... 745 150... 720? 



150... 645 

 2^5... 655 



132 630.. .775 



135 620... 770, 



133 



150... 650... 790 150. .350. .625?. . 780 



150. .345. . . . 780 



