428 ASTRONOMICAL OBSERVATIONS. 



which most frequently cease to be so when judiciously exa~ 

 mined. 



Should this hasty and imperfect sketch, call forth the atten- 

 tion of those possessed or" more talents and industry for the ac- 

 curate investigation of this interesting subject, the views of the 

 writer will be fully accomplished. 



No. LXIII. 



i 



Astronomical Observations made at the TIavanna by J. J. dc Ferrer. 

 and communicated by him to the Society. 



Latitude of the Havanna 23° 08' 24" N. 



1 809. April 3d, Emersion of Saturn from the <L . 



Apparent time. 

 h / if 



Emersion ef the ring of Saturn. . . . 1122 44,5 ver y exac O from the ob 

 Exterior contact or total emersion of the planet. 11 23 49,0 Idem. > ,-#;_» ljmh or' 



Total emersion of the ring- 1124 19,0 Idem. 3 scure " mD *" 



April 29. Eclipse <£ 

 Emersion of Tycho, beginning. . . . 8 14 15 



end 8 14 59 



End of the Eclipse 8 35 25 



April 29, Occupation of la, and 2a €± C. 

 Immersion la £t illuminated limb. . . . 11 06 25,8'} 



Immersion 2a it illuminated limb. . . , 11 13 21,0 C Observations very exact. 



Emersion 2a it obscure limb. . . . 12 31 51,8 J 



June 23. Occultation of la,tC- and 2a it <£. 

 Immersion, obscure limb la^. . . . 7 42 40,8 very exact. 

 Immersion, obscure limb 2a it. . . . . 7 51 52,8 very exact. (cloud. 



Emersion, illuminated limb, 2a it. . . 9 18 32,0 may be 6" less on acct. of a 



June 28. Occultation of @ Capricorn <£. 

 Immersion, illuminated limb, <£. . . • 15 41 20,4 very exact. 



Emersion, obscure limb, £ 16 54 53,5 very exact. 



The times mentioned are apparent. — Magnifying power of the Telescope 100' — The 

 accuracy of the above observations may be depended on. 



(ffA model and description of a machine for steering a vessel of any 

 burden, zvitk ease and perfect safety to the steersman, has been laid before 

 the Society, for which an Extra Magellanic-premium oj a gold medal of the 

 value of twenty dollars zvas awarded by the Society to the inventor, Mr. fames 

 Humphreys 0/ Philadelphia. But the communication, rvhich cannot be well 

 understood without a plate, came too late to be conveniently inserted in the pre- 

 sent volume. It shall, hoxvever, appear in the next. 



END OF VOL. VI. 



