148 



August 1859, when it was exchanged for No. 33, which has subse- 

 quently been, and is now, in regular employment for that purpose. 



Besides the four principal observers already noticed, a few determina- 

 tions were made, as is shown in the Tables, by Mr. Valentine Magrath, 

 Assistant in the Observatory, by Captain Haig of the Royal Artillery, 

 practising at Kew preparatory to his employment on the Boundary 

 Commission between the United States and the British possessions , 

 on the "West Coast of North America, and by Lieut. Goodall of the 

 Royal Engineers, who attended at Kew to practise the manipulation 

 of magnetical instruments. 



TABLE I. Observations of the Magnetic Dip, at the Kew Observatory, in 

 1857 and 1858, with Circles of the English Construction, fitted with 

 Verniers and Microscopes. 



