結縛省略態に於ける被縛體の形状について

抄録

It is said that many kinds of knots are used for fishing, hunting, construction and decoration among primitive societies. And we can see the resemble samples mentioned above in the daily life of present uncivilized people.
Some time ago, in Vol. 64, No. 2 of this Journal the author wrote about"the determination of sequence in the development of knotting among uncivilized people"and noted that it was necessary to make clear the development of the shapes of materials to which was applied in order to know the history of knotting techniques.
For this reason, by gathering many kinds of material with applied knotting in neighbouring uncivilized people, and also by comparing these with those applied to ancient pottery, stone and ivory implements whose ages are wellknown, the author had been able to classify the figures of materials namely,
1. Placing uneven figures on the concave or convex parts of materials which are proof against slipping, so that knotting can then be accomplished.
2. Boring holes in objects through which rope or string may be tied.
3. Placing an object upon some other material, utilizing gravity. For example, on the forked part of some other material, the bar (object) is first can be laid and so that knotting can be accomplished indirectly.
4. Inserting an object between two materials (utilizing friction). This is a very efficient technique for knotting.
In this paper the author has also described the development of techniques and tool necessary to shape materials into various kinds of figures.