106 Yasui.- — A Japanese Fossil Sequoia. 
of Sequoia from types characterized by the normal occurrence of resin canals 
in their woods — that is, from the Pityoxylon type. 
Summary. 
1. A wood occurring in the lignitic Tertiary coals of the Aichi-Gifu 
coal-fields of Hondo is clearly closely related to Sequoia , both on the grounds 
of its traumatic and normal characters. 
2. The presence of this type of lignitic remains is further evidence for 
the widespread distribution of the genus Sequoia in the Tertiary of the 
Northern hemisphere. 
3. It supplies confirmation for the hypothesis that the Sequoias have 
come from pine-like ancestors. 
DESCRIPTION OF PLATE IV. 
Illustrating Professor Kono Yasui’s paper on a Fossil Wood of Sequoia from the Tertiary of Japan. 
Fig. 1. Transverse section of wood of Sequoia hondoensis. x 40. 
Fig. 2. Transverse section of wood of Sequoia hondoensis , showing traumatic resin canals more 
highly magnified, x 125. 
Fig. 3. Longitudinal view of same, x 60. 
Fig. 4. Longitudinal view of part of the foregoing more highly magnified, x 12 5. 
Fig. 5. Longitudinal, approximately radial, view of the same, x 60. 
Fig. 6. Longitudinal section of tracheid of the same, showing ‘ bars of Sanio’. x 500. 
