104 



PROCEEDINGS OF THE AMERICAN ACADEMY 



were within a small compass, and the differences had been 

 accurately determined by triangulation. 



Moon Culminations, 



Observed at Dorchester with a Portable Transit Instrument of 22 

 inches Focus ; corrected for Collimation, Level, and Azimulhal 

 Deviation, and for Clock Error and Rate on Sidereal Time. 



Lat. 4-42° 19' 17". Lon. West of Greenwich, 4h. 44 m. 17 s. 



