Development of song in the Bengalese finch: Crystallized song (120 days of age)

Development of song in the Bengalese finch: Plastic song (78 days of age)

Development of song in the Bengalese finch: Sub song (50 days of age)

Development of song in the Bengalese finch: Sub song (63 days of age)

Song behavior of a father Bengalese finch

Undirected song behavior of a male Bengalese finch

Courtship behavior of a male Bengalese finch

Courtship and mating behavior of Bengalese finch

Song in the Cave

Song in the Cave

Song of the Sun

The Development of the Train

A solo song of the male gibbon

The mastery of English in one hundred days

China survey by the Japan Society of River Development

China survey by the Japan Society of River Development

hina survey by the Japan Society of River Development. From the window of a bus

<Seven Places in Salzburg and Berchtesgarden. Arranged accoring to the Seven Days of the Week>: Saturday: Graveyard of St. Peter's in Salzburg

生命保険の発達と其の合理化 (一・四) : 日本産業の合理化 (120・123)

Freehand copy of a transcription of “The Song of Everlasting Sorrow” by Bai Juyi

Growth and development of chicks in the Large-Billed Crow, Corvus macrorhynchos

<Seven Places in Salzburg and Berchtesgarden. Arranged accoring to the Seven Days of the Week>: Coping-Stone

News 120: Vendors of L’Epoque

News 120: Vendors of L’Epoque

Memorial Portrait of the Actor Ichikawa Danjuro Ⅷ : Memorial Song "Shikinoya"