抄録
In this report we observed the time lag in ignition and flame up when the leaves of grass and tree were exposed under several conditions of the temperature and moisture. These leaves were gathered from the Nopporo experimental forest in May 1955.
The leaves of twenty species were tested.
(1) The leaves of the grass are more susceptible to ignition than those of tree. Specially Pteridophyta is most susceptible. Sasa is easy to flame up in lower temperature.
(2) The dead leaf is easy to ignite than live one. The younger the leaf, the more inflammable. Probably this is due to the thickness of the leaf in addition to its types and chemical composition.
