H36 Issued January 17, 1908. U. S. DEPARTMENT OF AGRICULTURE. OFFICE OF EXPERIMENT STATIONS— BULLETIN 195. A. C. TRUE, Director. SIMPLE EXERCISES ILLUSTRATING SOME APPLICATIONS OF CHEMISTRY TO AGRICULTURE. BY K. L. HATCH, Principal of the Winyiebago County School of Agriculture and Domestic Economy, Wimieconne, Wis. WASHINGTON: GOVERNMENT PRINTING OFFICE. 1908. .iograph Class ___SiiI^in 1042 Issued January 17. 1908. U. S. DEPARTMENT OF AGRICULTURE. OFFICE OF EXPERIMENT STATIONS— BULLETIN 195. 7 A. C. TRUE, Director. SIMPLE EXERCISES ILLUSTRATING SOME APPLICATIONS OF CHEMISTRY TO AGRICULTURE. BY K. L. HATCH, Principal of the Winnebago County School of Agriculture and Domestic Economij, Winneconne, Wis. WASHINGTON: GOVERNMENT PRINTING OFFICE. 1908, V 'xX-^' THE OFFICE OF EXPERIMENT STATIONS. A. C, True, Ph. I)., Sc D., Dinchn: E. W. Allen, I'h. I)., Af