166 



Miscellanies. 



h. 



m. 



31 



3 



44.8 

 47.0 



Duration of eclipse, 

 Do. of ring, 



" The phases of the ring are the perfect formation and perfect rupture, 

 without reference to beads. No dark lines seen." 



October 19, 1838. — The Committee on the solar eclipse of the 18th 

 of September, made a further Report in part, comprising the following 

 observation : — 



No. 25, by F. R. Hassler, Esq., at Weasel Mountain, N. J., latitude 

 40° 52' 35" N., approximate longitude Ah. S7m. 25.7s. W., being one of the 

 stations of the coast survey, with telescopes of the large theodolite, pow- 

 ers 116 and 151. 



h. m. s. 



First contact. 

 Inner contact, . 

 End, 



Duration of eclipse, 

 Do. of ring, 



From a drawing, accompanying Mr. Hassler's communication, it ap- 

 pears that several broken portions of the ring, or beads of light, for a 

 second only, extended from cusp to cusp, presenting a most beautiful 

 appearance. During the rest of the eclipse, except this single second, 

 the cusps were dull and rounded off at the end. 



November 2, 1838. — The Committee on the solar eclipse of the 

 18th of September, made a further Report in part, comprising the 

 following observations : — 



Nos. 26 and 27. Observations of Professors Alexander and Henry, 

 at the house of the latter, (lat. 40° 20' 50" N., Ion. Ah. 58ot. 37.2s. W. 

 of Greenwich, being 0.1s. in time W. of Nassau Hall,) Princeton Col- 

 lege, New Jersey ; with a five feet Fraunhofer, yellow screen glass, 

 power 60 for beginning and end, and 40 for the ring, and with a three 

 and a half feet Dollond, dark red screen glass, power 80. 



h. m. s. 



3 14 42.71 

 8 14 43.31 



4 33 11.27 



(not observed.) 



5 46 38.54 

 5 46 39.24 



2 31 54.88 



iieginning, 



do. - 

 Formation of ring, 

 Rupture of ringy 

 End, - 

 do. - 

 Mean duration of eclipse, 



Henry. 

 Alexander. 

 Both observers. 



H-enry. 

 Alexander. 



do. of ring, (not observed) less than tabular duration. 

 About two minutes before the formation of the ring, Prof. Henry 

 saw, in the Dollond telescope with a red screen glass, an arch of faint 

 light between the cusps, and shortly afterwards a brush of greater 



