地磁氣傾差圖 The magnetic dip

地磁氣傾差圖 Lines of equal magnetic dip

地磁氣傾差圖 Lines of equal magnetic dip

地磁氣水平力圖 The horizontal intensity of the earth's magnetic force

日本近海地磁氣偏差圖 大正12年等傾差線

地磁気偏角圖 Magnetic chart for 1919

地磁氣水平力圖 Mean lines of equal horizontal force

地磁氣垂直力圖 Mean lines of equal vertical force

地磁氣水平力圖 Mean lines of equal horizontal force

地磁氣垂直力圖 Mean lines of equal vertical force

Studies on the magnetic properties attributed to the competition with the magnetic interactions

磁力偏角圖 Lines of equal magnetic declination

Magnetic observations in the year 1906

Magnetic observations in the year 1905

Magnetic observations in the year 1904

Studies of the magnetic dipoles of the earth and the planets

Report of the Kakioka Magnetic Observatory = 気象庁地磁気観測所報告

Report of the Kakioka Magnetic Observatory = 気象庁地磁気観測所報告

Report of the Kakioka Magnetic Observatory = 気象庁地磁気観測所報告

Report of the Kakioka Magnetic Observatory = 気象庁地磁気観測所報告

Report of the Kakioka Magnetic Observatory = 気象庁地磁気観測所報告

Report of the Kakioka Magnetic Observatory = 気象庁地磁気観測所報告

Report of the Kakioka Magnetic Observatory = 気象庁地磁気観測所報告

Report of the Kakioka Magnetic Observatory = 気象庁地磁気観測所報告

Report of the Kakioka Magnetic Observatory = 気象庁地磁気観測所報告