WORKS BY PROFESSOR JOHNSTON. I. 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. "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."-Spectator. "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."-Scottish Farmer. II. AND LECTURES ON AGRICULTURAL CHEMISTRY GEOLOGY. A New Edition, in One large Volume Octavo, price 24s. This Edition, besides embracing the researches of other chemists, contains 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."-Quarterly Review. "The most complete account of agricultural chemistry we possess."-Royal Agricultural Journal. "Unquestionably the most important contribution that has recently been made to popular science, and destined to exert an extensively beneficial influence in this country." -Silliman's American Journal of Science, (Rev. of the American Edition.) "A perfect storehouse of chemistry, geology, and agricultural science."-Spectator. Professor Johnston's Works-continued. ELEMENTS OF III. AGRICULTURAL CHEMISTRY AND GEOLOGY. A New Edition, greatly enlarged, price 6s. "The style is delightfully clear, the facts important, and brought to bear on the daily business of the farmer's life with startling effect."-Britannia. "Nothing hitherto published has at all equalled it, both as regards true science and sound common sense."-Quarterly Journal of Agriculture. "Of all the different works which have lately been published on the Chemistry of Agriculture, that now before us appears to be most likely to be of real service to the practical man."—Gardener's Magazine. IV. A CATECHISM OF AGRICULTURAL CHEMISTRY AND GEOLOGY. A New Edition, being the 27th, entirely re-written, price ls. "We would recommend every farmer in Britain, let his knowledge of agriculture be extended or limited, to procure a copy of the Catechism for himself; and this recommendation we would support by the facts, that the memories of the initiated are apt to get rusty-so much so, that a little rubbing up may be necessary; while the uninitiated, unaware of the science of agricultural chemistry, by a simple perusal will be able to discover it clearly, and mould its principles to obtain the highest advantage to themselves." -Scientific Agriculturist. "La lecture de ce petit livre donnera, nous en sommes certains, à plus d'un lecteur pratique, des inductions qui lui feront appercevoir la cause des mecomptes et des succès éprouvés en agriculture; resultats trop souvents attribués par l'aveugle routine au hasard où à des circonstances tout à fait étrangères."-French Translation. V. ON THE USE OF LIME IN AGRICULTURE. In One "Its title indicates its importance. Everything that can be said of lime as a manure is stated, not at random or hearsay, but according to tests made with chemical certitude, and verified by productive results. It is a great addition to the art of preparing and using one of the best and most universally appropriate of artificial manures."-Bell's Life. VI. CONTRIBUTIONS TO SCIENTIFIC AGRICULTURE. 8vo, price 6s. 6d. VII. THE POTATO DISEASE IN SCOTLAND IN 1845-6. price 4s. 6d. 8vo, VIII. INSTRUCTIONS FOR THE ANALYSIS OF SOILS. 8vo, price ls. |