CONTENTS. 
I. Account of experiments made with an invariable pendulum at 
the Royal Observatory at Greenwich , and at Port Bowen, on 
the eastern side of Prince Regent’s Inlet. By Lieutenant 
Henry Foster, R. N. F. R. S. - page i 
II. Observations on the diurnal variation of the magnetic needle, 
at the Whale Fish Islands, Davis's Strait. By Lieutenant 
Henry Foster, R. N. F. R. S. - - 71 
III. Magnetical Observations at Port Bowen, &c. A. D. 1824- 25, 
comprehending observations on the diurnal variation and 
diurnal intensity of the horizontal needle ; also on the Dip of 
the magnetic needle at Woolwich, and at different stations, 
within the Arctic circle. By Captain W. E. Parry, R. N. 
F. R. S. and Lieutenant Henry Foster, R. N. F. R. S. 73 
IV. Abstract of the daily variation of the magnetic needle No. 2 , 
By Lieutenant Foster, R. N. F.R. S. - - 118 
V. Observations for determining the dip of the magnetic needle. By 
Captain W. E. Parry, R. N. F. R . S. and Lieutenant Henry 
Foster, R.N. F.R.S. - 12 6 
VI. Observations on the diurnal changes in the position of the 
horizontal needle, under a reduced directive power, at Port 
Bowen , 1825. By Lieutenant Henry Foster, R.N. F.R.S. 
129 
VII. A comparison of the diurnal changes of intensity in the 
dipping and horizontal needles, at Port Bowen. By Lieu- 
tenant Henry Foster, R.N. F. R. S. - 177 
