1. The average composition of 48 kinds of fowl excrements which were collected from various districts in Kagawa prefecture is as follows : [table] 2. As seen in the table above mentioned the percentage of water soluble phosphoric acid for total phosphoric acid are respectively 53 and 16.8. 3. Fowl excrement is at once quick and slow as nitrogenous manure, consequently special attention must be taken for its manuring and appreciation.