92 CALIFORNIA ACADEMY OF SCIENCES. 



and moon were projected upon a white background, and 

 exhibited as in a camera obscura. 



The geographical position of tlie Davidson Observatory 

 is latitude, 37° AT 24.75'' north; longitude, 122° 25' 40.54", 

 or 8h. 09m. 42,70s. west of Greenwich. 



The phenomenon was also observed with three-inch and 

 smaller telescopes, by Messrs. Lawson, Morse, Welker and 

 Hill, of the Coast and Geodetic Survey. 







