30 Professor Encke on the Solar Eclipses 



For the termination of the transit put 



\' = 229° l'-5 |3' = + 2° 56''0 ; and calculate 

 cos ^ = sin /3' sin <f) + cos /3' cos $ cos (^'— /) ; 



and ^'s centre will leave the O's disc 



May 5. 2^ 42' 55" + I + 118"-8 cos ?' 

 apparent time of the place of observation. The contacts of 

 the limbs will respectively take place about 1' 33" sooner or 

 later. 



For Berlin, where 



<p = 52° 31'% I = 31° 3'-5, 

 we find cos ? = +0-3873 cos ? = -0-5375 



^ 's centre enters on 1 , _ , i. f 21'' 57' 34" f App. time of 

 — — leaves / ^^^^ ® ^ ^^^^^ \ 4 46 5\ Berlin. 



The entrance on the 0's disc takes place 32° eastward, the 

 parting from the 0's disc 87° westward, of the northernmost 

 point of the 0's disc. 



The duration of the transit of each second in arc of 5 's 

 diameter over the O's disc is = 17"-3 in time. 



Solar Eclipse^ July 27, 1832. App. time of 



Berlin. 



Beginning on the earth in general 0*" 11' 



in 294° 29' east longitude from Ferro. 

 10 59 north latitude. 



Beginning of the total eclipse on the earth I 6 



in 280° 5' east longitude from Ferro. 

 12 53 north latitude. 



Total eclipse at noon 2 47 



in 349° 23' east longitude from Ferro. 

 24 34-5 north latitude. 



End of the total echpse on the earth 4 31 



in 54° 24' east longitude from Ferro. 

 2 47 south latitude. 



End of the eclipse on the earth in general 5 26 



in 38° 11' east longitude from Ferro. 

 4 23 south latitude. 

 The eastern limit of visibility of this eclipse runs through 

 Europe, from the north coast of Ireland above Greenwich, 

 along the boundary of Germany and France, to the coast of 

 Dalmatia. To a country to the westward it will be visible; 

 iii Germany it will not be visible. The western limit em- 

 braces the greatest pan of North America and a great part of 



South 



