71 REPORTS ON THE STATE OP SCJE.NOR. 



Magnetic Observations at Falmouth Observatory. — Report of the Com- 

 mittee, consisting of Sir W. H. Preece (Chairman), Dr. E. T. 

 Glazebrook (Secretary), Professor W. G. Adams, Dr. Chree, 

 Captain Creak, IVIr. W. L. Fox, Sir Arthur Pucker, and Pro- 

 fessor Schuster. 



The results of the magnetic observations at Falmouth Observatory for 

 1909 have been published in the Annual Beport of the National Physical 

 Laboratory, as well as in that of the Eoyal Cornwall Polytechnic 

 Society. The mean values of the magnetic elements for the year are : — 



Declination 17° 48'"4 W. 



Inclination 66° 30'-6 N. 



Horizontal Force 0-18802 C.G.S. 



Vertical Force 0-43266 C.G.S. 



The instruments were inspected by Mr. Baker, of the Kew Observatory, 

 in October 1909, who reports that they were then in good order, and 

 that the results of the absolute measurements made on October 15 

 were in good agreement with Mr. Kitto's latest observations. The 

 results of the tabulations for the year were also satisfactory. 



During the year the Magnetic Survey ship ' Carnegie ' visited Fal- 

 mouth, and was furnished with data of great value. An account of 

 some of the results is given in a paper by L. A. Bauer and \V. J. 

 Peters, ' On the Complete Magnetic Eesults of the First Cruise of the 

 " Carnegie," 1909-10,' published in ' Terrestrial Magnetism ' for June 

 1910, from which the following is an extract: — 



' The desire therefore arose to make assurance doubly sure with 

 regard to deviations of any kind (constant or harmonic), and to swing 

 the " Carnegie " in a locality as free as possible from local disturbances. 

 Captain Chetwynd, Superintendent of the Compass Department of the 

 British Admiralty, being appealed to for advice with regard to a British 

 port fulfilling the desired conditions, recommended Falmouth.' 



The article also contains a comparison of the values of the magnetic 

 elements at Falmouth with those already obtained by the American 

 observers and the British Magnetic Survey values dependent upon 

 Pucker and Thorpe's observations, referred to October 18, 1909, ' with 

 the aid of the valuable series of annual values of the Falmouth Magnetic 

 Observatory. ' 



The figures are as follows : — 



from which it will be seen that the agreement is very close. 



The magnetographs at Eskdalemuir are now working satisfactorily, 

 and it is hoped it will be possible to commence this year the regular 

 tabulation of results. In view of the importance of comparing the 

 regular magnetic variations obtained there with those found in the South 



