叶脉书签,顾名思义,就是用树叶通过一定的化学处理后,去掉树叶的叶肉细胞,留下网状的脉纹,再通过染色制成各种颜色的书签。这种书签,由于来自树叶,具有其他书签所不能比拟的自然之美,令人爽心悦目,不但实用,而且是送礼佳品。其制作简便易行,材料来源容易,而且在制作过程中可以学到不少的生物知识。现把制作方法介绍如下: Vein bookmark, as the name suggests, is through the leaves through a certain chemical treatment, remove the leaf mesophyll cells, leaving reticular veins, and then made by the color of the bookmarks of various colors. This bookmark, due to the leaves, with other bookmarks can not match the natural beauty, it is refreshing, not only practical, but also gifts to share. The production is simple and easy, the material source is easy, and a great deal of biological knowledge can be learned during the production process. Production methods are introduced below: