Maine State College Experiment Station Report, 1895. Plate III. 



Tnrnips. 



Ruta-baafas. 





Box 1. Soluble Phosphoric Acid. 



Box 2. Insoluble Phosphoric Acid — Florida Rock. 



Box 3. Insoluble Phosphorate of Iron and Alumina. 



Box 4. No Phosphate added. 



