Volume 1 (1951)

• Ryokichi Tsuchiya:
  Oxidation Equilibrium of the Electrolyte of Magnesium (Part 1). Oxidation Equilibrium of the Electrolyte of Solid and Liquid Anhydrous Magnesium Chloride.
  pp.1-9. Science
• Motohichi Mori, Eishin Kyuno:
  On Catalyser in Electrolytic Oxidation of Benzene. (Part 1)
  pp.11-15.
• Kikuya Mashiko:
  Studies of the Fresh-water Plankton of Central China, I.
  pp.17-31.
• Genkei Masamune:
  Enumeratio Tracheophytarum Ryukyu Insularum.
  pp.33-54.
• Kantaroo Senda:
  Influence of Superposition and Splitting of Layers F₁ and F₂ over the Diurnal Variation of Ionosphere.
  pp.55-64.
• Kantaroo Senda:
  A Theoretical Consideration on Latitudinal and Seasonal Variations of the Ionosphere F₂.
  pp.65-76.
• Toshio Hiraguchi:
  On the Dimension of Partially Ordered Sets.
  pp.77-94.
• Kantaro Senda:
  Investigation of the Diurnal Variation of the Ionosphere F₂ in Winter and in Summer
  pp.95-112.
• Kantaro Senda, Shuzo Hattori:
  Theoretical Consideration for the Measurements of Attenuation of Millimetre and Centimetre Waves in the Rain Fall
  pp.113-122.
• Matuo Takemura:
  New Approach to the "Lasting-Tilt" of Sperry Type Gyro-Compass
  pp.123-136.
• Kikuya Mashiko:
  Studies of the Fresh-water Plankton of Central China, II.
  pp.137-154.
• Katsushige Hori:
  Morphological Studies on Muscoid Flies of Medical Importance in Japan, III.
  pp.155-165.
• Genkei Masamune:
  Enumeratio Tracheophytarum Ryukyu Insularum, II.
  pp.167-199.
• Kozo Imahori:
  Studies on the Charophyta in Formosa I
  pp.201-221.
• Wataru Ichikawa:
  The Fossil Diatoms in the Hirazawa Diatomite, Miyagi-ken, Japan
  pp.223-237.