李约瑟先生将造纸术认作四大发明之一。那位问了:欧洲不是有莎草纸和羊皮纸吗?不怕不识货,就怕货比货。了解下前两位,你才晓得以蔡伦为首的历代先贤,如何造福人类。莎草纸最初是埃及人使:摘了纸莎草,削了皮,将茎切成三角形截面的薄片,在水里泡一周;长条们排一列,垂直着这一列再搁一层,然后用木槌打:两层薄片压成一片了,再用石头压紧磨光,这就可以用了。要命的是:莎草纸只能在埃及那类干燥地方使,湿气一重,立刻完蛋;而且费尽千辛万苦制得一张,只能单面书写画画。罗马人曾试图把莎草纸放在雪松熬的油里,后来发现:倒是不受湿气了,可是颜色日益变黄,字迹不清;油里捞出来,立时粉碎。 Mr. Needham identified papermaking as one of the four inventions. Who asked: Europe is not a papyrus and parchment it? Not afraid to not know the goods, afraid of goods than goods. Understand the first two, you know the predecessors led by Cai Lun, how to benefit mankind. The papyri was originally made by the Egyptians: pick the papyrus, peel the skin, cut the stem into slices of triangular cross-section, and soak in water for a week; the rows of the strips are arranged one on top of the other, Gavel hit: two layers of sheet into a piece of pressure, and then pressed stone polished, which can be used. What is terrible is that: papyrus can only make those dry places in Egypt, moisture, immediately finished; and exhausted untold hard life to make one, only one side writing and drawing. The Romans tried to put the sedge paper in the oil of the cedar, and later discovered that it was not wet, but the color was getting yellow and the writing was not clear. The oil was taken out and crushed immediately.