Carbonized fir from Noboribetsu petrified forest

Noboribetsu Hot Springs (No. 228)

Noboribetsu Hot Springs (No. 228)

Bird's-eye view of Noboribetsu Onsen

A painting which scenery and customs in Noboribetsu area were drawn

The Forest of Fossil B

Bath Streams (Noboribetsu, Hokkaido) [verso: Dog and Child]

From the edge of a forest

炭化木 : 炭化木

炭化木 : 炭化木

In the forest

Forest of White Birchers

石炭の液化

石炭油化

Beach Tree, Forest of Fontainebleau

Forest of Sotatsu [from "Japanesque Landscape"]

Nenryou no shintaisei : sekitan to sekiyu to mokutan

Agonistic behavior between females of domestic cats in the forest

Agonistic bahavior between males of domestic cats in the forest

工業化した石炭の液体化

造林　木登り器（高知営林局）

Reproductive behavior of domestic cats during the mating season in the forest

植物化石（炭化） : Plant fossil (carbonization)

植物化石（炭化） : Plant fossil (carbonization)

植物化石（炭化） : Plant fossil (carbonization)