Abstract
1. It is a remarkable fact that so-called landslides give very often awful damages to people, cattle, houses and others,
2. When a lands'ide takes place, the spot may in general be hollowed like an imperfect basin, and surrounding its upside there develops a new steep slope, from which ground water is apt to ooze out.
3. The basin thus formed is suitable for culture and habitation as we see in fig. 1 and fig. 3.
4. There is a tendency, in the area where landslides had formerly occured, to repeat the accident at the same spot or the adjacent area. If the region is habitated, the damage may be greater.
5. I intend, moreover, to, sketch (1) some topographic characteristics of landslide, (2) hills formed by mudavalanches, and (3) landslides caused dy heavy rains.
