142 



In all the Total Force observations, in that part made with Needle No. 4 weighted, for one particular 

 position of instrument ;ind needle, viz., when the face of the instrument was west and face of the needle 

 towards the face of the instrument, the recorded readings are nearly constant with value 63|, whereas 

 the readings for the three other positions of instrument and needle vary from 68 to 61, but are in each 

 observation consistent. 



The maintenance, at different stations, of a constant reading for the one position seems to indicate that 

 the direction of the needle was governed by some mechanical cause ; the reading obtained in this position 

 has, therefore, been discarded and the mean of the three other combinations adopted. 



The needle appears to be well balanced, and the error introduced by the omission is inconsiderable. 



TABLE VIII. Inclination and Total Force Results. 



TABLE IX. Declination Results. 

 From Observations taken by Lieutenant C. ROYDS, It. AT., with a Prismatic Compass. 



SECTION VII. 



RESULTS AT CAPE CKOZIER, CAPE ADARE, AND FALKLAND ISLANDS. 

 Frrnn Observations by Mr. BKRNACCHI with Circle No. 27. 



No explanation can be found for the large difference in the Total Force results at Cape Adare. 



