M APPENDIX, 



is in latitude n 6 24. Hence, by substituting ^0487 for m, ani 

 11 6 24 for /, in the fonnula given in article 2, and retaining the rest 

 of the data, we get -=-noosi4s which gives the ellipticity resulting from 

 the measurements in England and in India, y&j% nearly. 



Since m i m :: VCos. 2 'l (\ + '<o i -3nTn 3 : V Cos. * 7. ( 1 + e)* ~Sin~fl 3 

 and m=m ( fe|f|^i|^ )i ; and if fc*o 2 20, *i = 60820 fa- 

 thorns, and 1 -f e . = 1.003143 ; then y by substituting for l % the latitudes 

 8 50, 9 50, 10 30, 11 30, &c. we shall obtain the value of m for 



these respective latitudes, as follows : 



«i. 



8 SO... 



9 30.... ; 1 S 



11 30........... ...... ....... 60488 f 



12 30.. 60492 



13 30.. ............ ......... . 60497 j 



8 



9 38.39 



10 59 47.47 



13 



1.9 



Latitudes of the great stations of observation as deduced from the 



above measures of degrees 



Latitude of Punnae station as determined in art. 9,.„.. '.", 

 Latitude of Putchapolliam station^ ....... .......... ........ 



Latitude of Dodagoontah station,.. ................ ..„..., 



The latitude of Dodagoontah by the observations in 1805, was 

 12 59 59.91, which is less by nearly 2 than the latitude here given. 

 The latitude of the observatory at Madras, as deduced from that of 

 Dodagoontah, determined in 1805, was 13 4 8.7. Hence, if the present 

 latitude be made use of, it will give the latitude of the observatory at 

 Madras 13 4 11 nearly. 



4, The late measurements from Dunkirk to Barcelona, hj the French 



