280 



Astronomical and Magnetical Observations, [April, 



ANNOTATION. 



The Editor would recommend his old friend ^nd pupil Dr. 

 Reade to consult the Philosophical Transactions, volumes 7? 8. 9, 

 10, and 11; in which he will find tiie controversy between Sir 

 Isaac Newton and Father Pardies, Dr. Hooke, M. N., Mr. Linus, 

 Mr. Gasc\.igne, and Mr. Lucas; and likewise the optical treatise of 

 Marat, wlio uiadc so infamous a figure at the beginning of the 

 French Revolution. He will see that most of his opinions are not 

 new, and he will find Newton's refutation of some of the most 

 plcusil)le of them quite satisfactory. I am sorry to add that he will 

 find hiiijself by no means in very respectable company, either in 

 point of knowledge of the subject, or of honesty. 



Article VIII. 



Astronomical and Magnetical Ohservations at Hackney Wick. 



By Col. Beaufoy. 



Latitude, 51° 32' 40-3" North. Longitude West in Time 6"t^. 



Feb. 20, Immersion of Jupiter's {, 7h 2S' 26' Mean Time at H.W. 



1st Satellite 



Feb. 21, Immersion of Jupiter's 



3d Satellite 



Emersion 





Feb. 27, Emersion of Jupiter's (11 

 1st satellite (W 



Ditto at Greenwich 

 Mean Time at H.W. 

 Ditto at Greenwich 

 Mean Time at H.W. 

 Ditto at Greenwich. 

 Mean Time at H.W. 

 Ditto at Greenwich. 



N.B. The lime of the emersion of Jupiter's 3H satellite on 2l9t February is nearly 

 13' laler than the time set down in the Ephemeris. 



Magnetical Ohservations. 

 1814. 



