When I was at Mentone, some six weeks since, Dr. Bennet showed me some Rhododendrons, as a curiosity, growing in his garden in the Maritime Alps. He informed me that the peat in which they were growing had cost him L20 to obtain by rail from - I think he said - Milan. I gave him the description of the Rhododendrons in the garden of the late Mr. Cuthbert Johnson at Croydon, growing entirely in sawdust. It must have been fifteen or sixteen years since I first saw this experiment. The Rhododendrons were then growing luxuriantly in a large bed of pure sawdust. As I was interested in this mode I again called ten years afterwards, and Mr. Johnson again showed me the result. He said, " You see on the right that large bed of Rhododendrons with leaves growing with great vigor, but there is not a single flower; on the left you see the plants covered with flowers, and of a large size. Those on the right are growing in oak sawdust, those on the left in deal sawdust." If I am not right I must be corrected by the editor of this journal, who is well acquainted with these experiments. Turpentine might probably be so prepared as to prove a valuable manure in the formation of the flowers of many plants.

Dr. Bennet said he should immediately profit by my information, as there was an abundance of deal sawdust in Mentone. - Cor. of Journal of Horticulture.