LECTURES 



APPLICATIONS OF CHEMISTRY AND GEOLOGY 



AGRICULTURE. 



**The profit of the earth is for all : the king himself is served by the field." — Eeelea.r. & 



BY JAS. F. W. JOHNSTON, M.A., F.R.SS. L. & E., 



FELLOW OF THE GEOLOGICAL AND CHEMICAL SOCIETIES, 



Honorary Member of the Royal Agricultural Society, Foreign Member of the Royal 



Swedish Academy of Agriculture, &c. &c ; Chemist to the Agricultural 



Chemistry Association of Scotland, and Reader in Chemistry 



and Mineralogy in the University of Durham. 



NEW EDITION, WITH AN APPENDIX, 



OOMTAmiNO SUGGESTIONS FOR EXPERIMENTS IN PRACTICAL AdRICULTURK 



NEW YORK: 

 C. M. SAXTON, AGRICULTURAL BOOK PUBLISHER, 



No. 152 FULTON STREET. 



