104 



PROCEEDINGS OP THE AMERICAN ACADEMY 



Providence Obs.. 

 R.I. 



Latitude North, 

 Longitude West, 



Eclipse begins, 

 Greatest obscuration, 

 End of Eclipse, 

 Duration, 



Point of beginning, 



" end, 

 Digits eclipsed, 



O / II 



41 49 32 

 71 24 15 



h. m. 8. 



4 26 14.6 



5 40 38.6 



6 46 47.1 



San Francisco, 

 Cdliforiiia. 



2 20 32.5 



150.2 



32.7 



11.207 



O ; // 



37 47 36 

 122 26 48 



h. m. s. 



11 25 3 



1 3 59 



2 45 55 



3 20 52 



7°6.2 



2.8 



8.123 



Toronto Obs., 

 Canada West. 



o / » 



43 39 24 

 79 21 30 



h. m. s. 



3 44 40.6 



5 3 50.0 



6 13 50.4 



Williamstown 

 Obs., Mass. 



O I II 



42 42 49 

 73 12 37 



h. m. s. 



4 16 26.0 



5 31 54.5 



6 38 58.2 



2 29 9.8 



\ o 



148.3 



30.6 



11.059 



2 22 32.2 



150.0 



33.2 



11.301 



At Eastham Church, Cape Cod, Mass., in Lat. 41° 50' 26", Long. 

 69° 58' 40", the least distance of the centres (51".81) will take place 

 at 5''- 46™- 3P- ; diff. of semidiameters 51". 94 ; from which it appears 

 that the line of the southern limit of the ring passes on to the Atlan- 

 tic about two miles south of Nausett lights, or in Lat. 41° 49' 37", 

 Long. 69° 56' 50". 



At Montreal, Canada, Lat. 45° 31', Long. 73° 35', the least dis- 

 tance, 62". 3, will be at 5''- 26"'- 40'- ; and as the difference of the semi- 

 diameters will be 51".5 only, the eclipse will not be annular there, 

 but probably will be so in the southwestern extremity of Montreal 

 Island. 



The village of Saratoga Springs, N. Y., Lat. 43° 3', Long. 73° 43', 

 appears to be situated exactly under the line of the southern limit of 

 the ring, as the least distance of the centres (51".2), which occurs at 

 5''- 29™. 3, is, according to the tables, the same as the difference of 

 the semidiameters. 



The difference between the absolute or Greenwich times of the be- 

 ginning at Georgetown, New York, Boston, Brunswick, Charlottetown, 

 &c., is quite small, or less than two minutes, or from 9''- 10™' 27'- to 

 9''12™' 3"' The time at any other place between them, and near the 

 Atlantic, may therefore be easily ascertained with a good degree of 

 accuracy, and without a direct computation, by subtracting its longi- 

 tude from about 9'' ll'"", and in this manner the time of the begin- 

 ning at the following cities and towns was ascertained. The angle of 

 the point at which the first impression will be made on the sun, or at 

 which the eclipse will commence, is reckoned from the vertex to the 

 right hand, and that at which the obscuration will end, from the vertex 

 to the left (except at San Francisco, where it is also to the right), as 



