Xu Guangqi's 徐光啟 book on agriculture is a compendium on every kind of matters concerning agriculture. The chapters are:

1.-3.農本 Nongben 4.-5.田制 Tianzhi 6.-11.農事 Nongshi 12.-20.水利 Shuili 21.-24.農器 Nongqi 25.-30.樹藝 Shuyi 31.-34.蠶桑 Cansang 35.-36.蠶桑廣類 Cansang Guanglei 37.-40.種植 Zhongzhi 41.牧養 Muyang 42.製造 Zhizao 43.-60.荒政 Huangzheng

２３．〈農器〉：〈颺扇〉

《集韻》云：颺，風飛也．揚穀器．其制：中置簨軸，列穿四扇或六扇，用薄板或糊竹為之．復有立扇、臥扇之別．各帶掉軸，或手轉足躡，扇即隨轉．凡舂碾之際，以糠米貯之高檻，底通作匾縫下瀉，均細如簾，即將機軸掉轉搧之．糠〔米+比〕既去，乃得淨米．又有舁之場圃間用之者，謂之扇車．凡揉打麥禾等稼，穰籺相雜，亦須用此風車．比之杴〔木+鄭〕箕簸，其功數倍．

23. Agricultural instruments: De-spelting machine

Translated by Ulrich Theobald