490 



Mr Filon, On the variation with the wave-length 



rCl 



u 



*H 



c3 



3 



T 



ooooooooo 









/< 



ooooooooo 





,0, 



o 



7 

 g 



i— lOiTHMONMOOO 

 OOOOOOOOO 



o 



i-H 



e 



eS 



7 



g 



^(MlOGOONQOClO 

 CO'-* ri (N ■* W H Oi o 

 0000000030 



^< 



ooooooooo 



OtOIMO>l>10nNH 

 SO-IO »0 ■** tJH t^ -H/l -H>< t*< 



,< 



ooooooooo 



r-KMHJOlrHOOOJCTOO 

 OOJ^OOCOCOMO 

 COiOlOiO-*-*'*^!^ 



i-H 



n 

 o3 



7 

 1 



oooooooooo 



co 



3 



7 



1 



(MOiOWO)t>«DHOD 

 0000000003 



1 — 1 I— 1 I-H l-H l-H 1— 1 1 — IH 



^< 



iao*a»oioooooo 



mOJT|(OrH(01000ir3(N 

 NO«5COON>On(NH 



•< 



ooooooooo 



OOi^OOONOO^N 

 IOOOtPOOOOCOCTO 



l-H 

 l-H 

 l-H 



00 

 0) 



7 

 g 



WHOONfflNNNCO 

 NlOCOCDT(((Mffqa)Q0CD 



oooooooososos 



CO 



o 



!h 



3 



7 



g 



OOOOOOSHSIOM 



000000030303 



l-H l-H i—l i-H i — 1 1 — 1 



,< 



oooooooooo 



ios-*H(Mooonoo 



1005lQ(MOSCO'*CO(MrH 



< 



ooooooooo 



OiCT)tON05l>00(MN 



00 

 <M 



a) 



7 

 1 



tHQO.IM t»NlO ■* OS00 rH 

 t~00O<X>^k0CNlt>.a0l0 



oooooooasasai 



l-H 

 l-H 



o 



Si 



c3 



7 



g 



CD 05 IO H (M i — I N (M 

 00000000303 



^< 



oooooooooo 



NCOHO(MOiO)i*00 

 THa>iO(NC5<D , *nNi — i 



^c 



ooooooooo 



OC3-*00ON00WN 



M 



CO 



CD 

 Eh 



7 

 g 



100005©^0<MOC5N 

 COtCcO(MCO(M0ONI>N 

 00000003030203 

 l-H i-H i-H l-H i — 1 i — 1 



l-H 

 US 



o 



IH 



ca 



3 



7 



g 



lO!C-*IOCOCOO"*H 



ooooooooo 



^< 



oooooooooo 

 ioo3iOr-H03co-^eoi—io 



f< 



ooooooooo 



i— iGOOOlOOQOOSeOO 



MNC«:OOOIO-*(MH 



