By R. Warington, New York; Orange Judd Company. Mr. Warington has been connected with the celebrated establishment of Lawes and Gilbert at Roth-ansted, where agricultural chemistry has been made to produce wonderful results. Those who are purely agricultural chemists have not always succeeded as farmers. On the other hand, we have never known a farmer or gardener, no matter how great may have been his practical success, who was not benefited by a fair knowledge of agricultural chemistry. One great merit in this work is, that it is neither a large work nor an abstruse work, and to those who are limited in time or means, and who will yet be benefited by a sketch of what agricultural chemistry teaches, we are sure this little book will be very welcome.