390 M. BESSEL ON THE ELLIPTIC SPHEROID OF REVOLUTION 



work contain the distances between the parallels of the astrono- 

 mically determined points from whence I have deduced 

 Punnae 



Putchapolliam . . . 171528-76 fathoms. 

 Dodagoontah . . . 292759*68 „ 

 Namthabad .... 419728*36 „ 

 Daumeragidda . . . 598629*84 „ 

 Takal K'hera . . . 782879*76 „ 

 Kullianpoor .... 965766*43 „ 



The proportion of the toise to the fathom has been given 

 above (2). 



4. French Arc. 



Formentera . . 

 Montjouy . . . , 

 Barcelona . . . , 

 Carcassonne . . . 



Evaux 



Pantheon .... 

 Dunkirk .... 



The distances of the parallels of the different points from the 

 most southern point are given^ with the exception of Barcelona, 

 in the Base du Syst. Metr. iii. p. 549. The spot in Barcelona 

 where the astronomical observations were made is 943^*13 north 

 of Montjouy (ii. p. 565). The latitudes of Formentera, Car- 

 cassonne, Evaux, and the Pantheon, are to be found in pages 89 

 and 459, vol. iii.; in page 89 the latitude of Montjouy is also 

 given. That of Barcelona is (ii. pp. 565 and 615) = 41° 21' 

 48"*37 -f 59"*53. For Dunkirk I have taken the result in iii. 

 p. 548. I have followed Delambre's example in leaving out 

 Perpignan, because the observations of the latitude at that place 

 seem less certain than the others. The latitudes taken by 

 Schmidt differ from the above ; at Montjouy + G"*49 ; at Barce- 

 lona— 0"*74 ; Carcassonne + 0"-01 ; Evaux — 0"*35 ; the Pantheon 

 0"*43 ; Dunkirk — 0"*11. He places the parallel of Barcelona 

 5''^*9 more to the north than is done here. 



5. English Arc. 



Dunnose . . 

 Grcenw'ch . 

 Dlenheim . 

 Arbury Hill 

 Clifton 



51 31-.!67 



1 13 19-9!I9 



1 36 20-398 



2 50 23-497 



490.".9-89 



69S29-19 



91696-39 



162075-93 



