48 T. Okada 



st'israological instruments are constructed and repaired, and a training 

 college for observers. The college consists of three classes. Graduates 

 of middle schools who have passed the entrance examinations are 

 admitted to this training college as students. Their expenses are furnished 

 by the Observatory. These students are taught mathematics, including 

 infinitesimal calculus, s^^herical harmonics etc., experimental and 

 theoretical physics, geophysics, oceanography, general and spherical 

 astronomy, meteorology, etc. They also work in the physical laboratory 

 and are trained in repairing and making instruments in the work- 

 shop. The college was inaugurated in 1922. The graduates of this 

 training college are to be appointed observers or assistants in various 

 observatories. 



The Kaldoha IJagnetic Ohservatory During the sixteen years 

 from 1897 till 1912 there was a magnetic observatory in the compound 

 of the Central Meteorological Observatory. But owing to disturbances 

 caused by the electric tramways it was transferred to Kakioka in 

 1913. Kakioka is a small town in Ibaraki Prefecture, Eastern Japan. 

 The Magnetic Observatory is situated on the top of an elevated farm 

 field near the southern outskirts of the town. The geographical coor- 

 dinates of the observatory are 



Longitude =140° 11' 21" E Latitude=36° 13' 51" N 



Height above sea-level =28.2 m. 



The nearest railway station is Ishioka, which is at a distance of 



12 km. from the Observatory. It can be reached by motor car in 



about thirty minutes. 



The main building is of re-enforced concrete construction, and 

 contains seven rooms besides bathroom and kitchen. In one of the 

 rooms is placed Eiefler's normal clock. In the next room Wiechert's 

 seismographs for horizontal and vertical components are installed. 

 There is also placed secondary clock which is in synchronization 

 with the mother clock. The variation house is a double walled 

 building of non-magnetic white bricks. The diurnal variation of 

 temperature is scarcely felt inside the rooms. In one of the rooms, 

 variographs and registering ai)paratus constructed by the Askania 

 Werke after Professor Ad. Schmidt's design, are installed on a solid 

 pier. The old variation house constructed of granite was badly dama- 

 ged in the last great earthquake of September 1, 1923, but was 

 repaired temporarily. In this old building Eschenhagen's variomi^ters 

 are contantly working. The absolute house is similar in construction 



