388 E. F. PIGOT. 



NOTE ON the NEW WIEOHERT SEISMOMETERS at 

 RIVERVIEW COLLEGE, SYDNEY. 



By Rev. E. F. Pigot, s.j. 

 [With Plates XV, XVI, XVII.] 



[Read before the Royal Society of N. 8. Wales, December 1, 1909.'] 



The following short account of the recent installation of 

 earthquake instruments at St. Ignatius' College is brought 

 before this Society mainly owing to the kind encouragement 

 of Professor Pollock, who has considered the matter of 

 sufficient general interest to warrant its being brought 

 under the notice of the Society. I have been further 

 induced to do so by the kindly interest shown by liis dis- 

 tinguished colleague on the professorial staff of the 

 University of Sydney, Professor David, and by Dr. Wool- 

 nough, both of whom, together with Professor Pollock, 

 inspected the instruments at the College shortly after their 

 erection, and joined him in a cordial expression of approval. 

 I should like to take this opportunity of recording my 

 obligation to the Director of the Geophysical Institute of 

 Frankfort, Dr. Linke, formerly Director of the Observatory 

 at Samoa, and especially to his successor, Dr. Angenheister, 

 for their valuable assistance to me when contemplating 

 this installation. During my stay of over three weeks at 

 Samoa last year, the latter gave me not only every facility 

 towards the object of my voyage, viz., the detailed study 

 of the instruments, the methods for the reduction of the 

 records, etc., but also day after day much of his own valu- 

 able time. 



I have been sometimes asked : what originated the idea 

 of starting a Seismological Observatory at Riverview? The 

 answer is simple. Having been for some time on the staff 

 of the Observatory at Zi-ka-wei (Sicca wei), near Shanghai, 



