59 
to be published regularly by the Batavia Observatory, will 
begin at 95 stations of which 55 are situated on the island 
of Java, 22 on Sumatra, 2 on Bangka, 1 on Billiton, 8 on 
Borneo, 4 on Celebes, 1 on Amboina, 1 on Banda, and 1 on 
Ternate, to which stations I hope 20 or 50 more wil be 
added in the course of next year. 
I have been unable to commence the magnetic survey of 
the Archipel. At the temporary observatory there was no 
room in which the magnetograph could be placed, and as 
long as this instrument was not in working order I thought 
it unadvisable to begin the magnetic survey. But even if 
the temporary observatory had afforded sufficient locality for 
the magnetograph, it would still have been impossible for 
me to commence this part of my work, for as long as I had 
no other than Javanese assistants’, I could not leave the 
observatory. I, therefore, have been obliged to postpone the 
magnetic survey, but I hope that ere long it will be named 
as a part of the work done by the Batavia Observatory. 
I will not conclude this without expressing the hope that 
all those who take an interest in the study of nature, will 
unite with me in thanking our Government for the oppor- 
tunity now so liberally afforded for studying the magnetical 
and meteorological phenomena in the East Indian Archipelago. 
Batavia , P. A. BERGSMA. 
December 1878. 
