48 



SEISMOLOGICAL REPORTS. 



1907. 

 30 May .. 



29 July ... 



14 Decern l)er 



19()H. 

 1(» April ... 



10 ., 



10 „ 

 10 „ 



Name of 

 Place. 



Jamestown 12. L5 a.m 



Time of 

 Beginning 

 of Shock, 

 dde. S.T. 

 9.30 E. of 

 G. 



Carrietou 



Eurelia 



Ilookina 



10 „ 



29 October 

 t> 



Clare ... l-5o a.in 



Yunta ... I lo7a.m. 



Apparent 

 Direction . 



S.W. to X.E. 



Apparent 

 Duration. 



Second.* 

 20 



7-20 p.m. N.E. to S.W. 



lo? a.m. 

 2-.5 a.m. 



Carrieton 

 Yongala 



Waukariuga 



Second Valley 

 Eudunda . 



Siitlierlands 



Mount Mary 



1"55 a.m. 

 1"50 a.m. 



B'lO a.m. 

 510 a.m. 



X.E. to S.W. I lOtol.-) 



S.W. to N.E. : Abimt 1 

 minute 



Seconds 

 5 



.50 



X.W.toS.E. 30 



S.AV. to N.E. I 10 



X.E. to S.W. 



S.W. to N.E. 



5-10 p.m. 



Effei't— Remarks. 



Sharp. Crockery knocked down 

 and door.-; shook. People 

 alarmed : rushed outside. No 

 damage reported. Loud rumb- 

 ling noise. 



A rather sevei-e shock. Many 

 residents were awakened by the 

 low rumbling noise that imme- 

 diately preceded it, and doors 

 and windows were distinctly 

 shaken by the vibration. 



Sharp. Crockerv nittlRig : no 

 damage. 



Windows and doors and movable 

 articles rattled. 



Houses trembled and cracked. 

 Crockery, itc, moved rapidly. 

 A long rumbling sound before 

 actual shock, and rumble after- 

 wards. Three distinct shocks 

 within the tremor. 



Small. I'tensils on dressing-table 



shaken. 

 Severe. Windows nittled and 



houses shook ; also hotel 



lixtures nc)i.s,\ . 

 Crocker.N rattled. 

 Beds were shaken, and crockery 



and windows rattled. 

 Doors and windows shook. 



crockery rattled, iron on roof 



trembled. Sound previous to 



shock resembled steam for 



several seconds. 

 Slight shock. 

 It was accompanied by a loud 



rumbling noise like a heavy 



wagon passing over hollow 



.ground. 

 The vibration caused windows, 



furniture, and crockery to 



rattle. It was accompanied by 



a loud rumbling noise like 



thunder. 

 It shook buildin.srs and made iron 



roofs rattle. 



SEISMOLOGICAL REPORT FROM THE PERTH OBSERVATORY, 

 WESTERN AUSTRALIA. 

 ]\Iy Dear Bakacchi, — Tlie Perth seismograph was (.iccted in 

 September, 1901. It is of the Milne horizontal pendulum type. It is 

 mounted on brick pillars with a marble table-top, and the j>endulum 

 is pointing true nortli. Both kerosene and electric lamps have be€n 

 used at different times, and we now adopt an 8 c.p. electric lamp, 

 covered with an opaque screen, in wliich is a small hole. The instru- 

 ment is placed on a concrete floor in the basement of the astrograph 

 building, about 8 ft. underground, and "iOU above sea level. 



The instrument has worked uninterruptedly and satisfactorily 

 since 1st January, 1908, with the following exceptions: — Five times 

 the light went out. Once the pay^er was caught on the cylinder. 



