2 Art. 9. -T. Terada: 



scarcely amount to 1 j-. Hence it was considered futile to continue 

 the observations with instruments of such low sensibility, and the 

 regular observations were suspended in 1900. At the same time, 

 he devised and constructed, with the able assistance of I)r. H. 

 Kadooka, now expert to the Military Telegraphic Department, a 

 set of extraordinarily sensitive magnetographs, and laid before the 

 Committee the plan of a provisory magnetic ol)servatory equipped 

 with these instruments. The proposal was approved, and the 

 necessary arrangements were promptly made under his supervision. 

 An underground room was excavated for the purpose, in the 

 vicinity of the Marine Biological Laboratory of the Science College, 

 at Misaki. The regular observations were commenced early in 

 1910. In the summer of 1911, Dr. Kadooka was appointed to his 

 present position, and the author took charge of the Observatory, 

 until April 1914, when the observations were suspended for an 

 indefinite term. 



The observers who were successively resident at Misaki and 

 took charge of the instruments were : 



Mr. Hideo Momose, formerly Hitotuvanagi, now teacher in 

 the Nagoya Sôdô-syû Third Middle School, 



Mr. Takeo Tatiiri, now Assistant in the Meidi Technical 

 School, Tobata, Hukuoka Prefecture, 



The late Mr. Kisaburô Matui, at the time of his death teacher 

 in the Sibusi Middle School, Kagosima Prefecture, 



Mr. Murato Nakata, now teacher in the Hakodate Com- 

 mercial School, 

 to whom the author's sincerest thanks are due for their untiring 

 alertness to their duty, which claimed their utmost patience and 

 attention, to say nothing of the inconveniences of living which 

 had to ho endured on account of the lonely situation of the 

 Observatory. 



The entire task of examining and studying the magnetographic 

 records in detail and drawing up the report thereon, was entrusted 

 to the author. Though the investigations are as yet by no means 

 completed, it seems now to be the proper time to summarize here 

 the principal results hitherto obtained. 



