WORKS 



PEOFESSOE JOHNSTON. 



EXPERIMENTAL AGRICULTURE. Being the Results of 



Past, and suggestions for Future, Experiments in Scientific and Practical 

 Agriculture. By JAMES F. W. JOHNSTON, F.R.SS.L. & E., &c. In 

 Octavo, price 8s. 



&quot; A very valuable book for the agriculturist, both as a warning and as a guide. 



. It is only by the combination of science and practice, like that exhibited, that 

 British farming can successfully compete with the altered state of the world.&quot; Spectator. 



&quot; Whoever, in fine, wishes to obtain a succinct and satisfactory account of all that has 

 been done in the field of agricultural experiment during the last eight or nine years, given 

 in such a form as to indicate at once the nature of the results that have been obtained 

 by the application of each particular substance, has now, in this volume, the means of 

 readily obtaining all the information that he can require ; while every one who intends 

 to institute experiments in future will find in it the necessary suggestions and directions, 

 with information as to what has already been accomplished.&quot; Scottish Farmer. 



LECTURES ON AGRICULTURAL CHEMISTRY AND 



GEOLOGY. A New Edition, in One large Volume Octavo, price 24s. 



This Edition, besides embracing the researches of other chemists, con 

 tains the result of nearly 2000 analyses, in connection with Scientific 

 Agriculture, made in the Laboratory of the Author since the publication 

 of the former Edition, and exhibits a full view of the actual state of our 

 knowledge upon this important branch. 



A valuable and interesting course of lectures.&quot; Quarterly Review. 



&quot; The most complete account of agricultural chemistry we possess.&quot; Royal Agricul 

 tural Journal. 



&quot; Unquestionably the most important contribution that has recently been made to 

 popular science, and destined to exert an extensively beneficial influence in this country.&quot; 

 SiUiman t American Journal of Science, (Rev. of the American Edition.) 



&quot; A perfect storehouse of chemistry, geology, and agricultural science.&quot; Spectator. 



