Curves 



of Differences of Daily Movements from the Mean Solar Diurnal Variation, and Resulting Lunar Diurnal Variations, at Trevandrum. Deduced by J. A.Brovn, F.R.S. 



16-31 DECEMBtR. 1858, 1-15 JANUARY. 1059 



Plate XLUl. 



Solar flours 



Mean Lunar Diurnal Variations. 





S3 



,2 1 N 



■J*., i 



ms 



tx 



v \;-= 





§ 

 1 



\/" 



®a 



*8s 



v. 



ii 



« 



■4 ./ V 



* 



1 \ 



l T £ 



V\J 



\ 



7 v ^ 



/ 



5-~e5:-« 



._-'"'"' 



2 . •S--, 



4 



^ 



/ 



IS 





Z 14 12 14 16 18 20 K Z ^* I 



/ 



Wi 



/ 



"\ 





-r^ 



A 



VR 



/rp- 



Vi 



o' 



Effilfi 



.^ w 



it 





ia 



v- 



Xr 



v 





W; 



?X 



\j 



\, 



tm 



12 I* 16 IB 20 2! _0 A *- s J "J 12 J* J2 



w 





mm 



r% 



v: / 







d 



m 





m 



I 



Bat 



^A 



A 





v i/ 



V 



TO 



/ igifc 



_ 22 



\ 1 _; fTfefrfo 



■ w 



S 



I 



I 



tr 



AfffW I'QLfiR D/U3'r. 



o 



"n. 



Yi,.£ 



-y 



& 



-.-A 





■J 



X x 



V-H- 



- 



E 



Ofc./e"8 A 



to23 d /f- 



Dec. 23 */S" 

 U29 d l6 k 



060.29'' /S 

 a 



jANfe*/* 



Jan! 6*2'' 

 to/2 d /4' 

 to It' IS' 



Lunar Month 

 Dec.l6"0 h 



jAN'll d O h 



\ 



December 

 1858 



January 

 1859 



February 

 1859 



i> Moon.on.tlui superior merulwiu ■* JMoon • on. the inferior ■meridian. Q Sufi.on.the meridian.. One division^ 25. Oneinch^ZS. Ascending curi/es iridiade miwemeiut of ukajVorth.End. cd'dw^needle. 1^ 



