( 418 ) 



B. Comparative Synopsis of the frequency of the earth-quakes 

 in the Minahassa, and the volcanic phenomena in this 

 and in the neighbouring regions during the period 

 J 887^ — 19Ü8; from the reports in the Natuurkundig 

 Tijdsciirift voor Ned. Indie. 



Year 



1887 



1888 

 1889 



1890 



1891 



1892 

 1893 



1894 



1^95 

 1896 



1897 



189S 



Entire j 

 oTe^rth^- Distribution over the year 

 quakes 



Volcanic phenomena 



12 3 12 Aug. 5; Sept. 3; Oct. 1; 



Nov. 3. 



4 Sept. 2; Oct. 2. 



more than! Jan. 1; Febr. 2; May 1; the 



13 rest as swarms from 6 

 to 12 Sept. 



2 in Ftbr.; 1 on 3 March; 

 swarm on 6 March a. f. 

 days; 1 in March; 2 in 

 Oct. 



Jan. 1 ; Febr. 2; May 2; 

 Dec. 1. 



3 

 16 



22 



Increased activity at Roeang since 

 June ; presumably in September also 

 at the sub-marine volcano of Mahen- 

 getan (Sangi- and Talaut-isles). 



Ash-showers on 20,21 and 24 June, 

 presumably wron.uly brought into 

 connection with out-break Makian 

 on 29/30 June; possibly to be attri- 

 buted to Sopoetan. 



On IS June and 19 Oct. Eruption Sangi on 7 June. 



On 24 March, 7 April, 8 Aug., 

 18 Sept. and 20 Dec. 



On 16 April, 12 June, 14 

 Aug., 4 Sept. and 23 Dec. 



On 27 July, 1 6 Oct. and 5 Dec. 



1 in Febr; 2 in May; 2 in 

 June; 1 in July; 2in Aug.; 

 2 in Sept.; 2 in Oct.; 4 

 from 8 u. a. i. 15 Nov. 



4 from 7 u. a. i. 26 Aug.; 3 

 from 21 u. a. i. 28 Sept.; 1 

 on 15 Nov.; 3 from 4 u. a. i. 

 8 Dec. 



Febr. 2; March 2; on 9, 24, 

 25, 27 and 30 April; on 15 

 May; on 1, 4, 12 and 16 

 June; July 1; Aue. 2; 

 Sept. 3; Oct. 1; Nov. 1. 

 Of these nothing recorded 

 at Batavia. 



Activity at Lokon since 29 March, 

 resumed in September and on 18 

 December. 



Increased activity at Lokon. 



Eruption Oena-Oena, since 10 Apri 

 introduced by earth-quakes on 2 

 and 3 May the eruption. 



