246 COMMANDER L. W. P. CHETWYND: RESULTS OF MAGNETIC OBSERVATIONS 



The comparison with the values deduced from observations at the nearest shore 

 station is given in Table V. 



The main feature which this comparison brings out is that the sea values on the 

 East Coast come out generally greater, and on the West Coast generally less, than 

 the corresponding value deduced from observations on shore. 



The differences appear to be slightly greater in the Northern latitudes. 



It is intended to investigate further the source of this difference. Meantime, for 

 navigational purposes, the values as found at sea have been accepted, and they are, 

 in so far as the English Channel is concerned, corroborated by results from other 

 vessels. 



The original records of the observations here discussed, as well as charts showing 

 the exact positions of the shore stations, are retained in the Compass Branch of the 

 Hydrographic Department of the Admiralty. 



