Dear Sir: I have been in the Horticulturist, many speculations and suggestions as to the cause of the Yellows of the peach tree, but none of them have been satisfactory to my mind, and I wish to suggest a new theory, or at least, one that I have not seen mentioned.

This disease may be constitutional and infectious; but having observed the commencement and progress of the disease, now prevailing in all the peach orchards, I believe, without exception, through the whole length and breadth of the Connecticut river valley, south of Springfield, I am fully convinced that, in this instance, it is an epidemic.

I first observed the disease in 1846, upon a few trees, by the premature ripening of the fruit, and the small wiry branches growing upon the main stems. This appeared simultaneously in different parts of the State, upon seedlings growing on poor soil, as well as upon the choicest varieties receiving the highest culture. Since that time the disease has prevailed to such an extent, that a large number of trees have already died, and a healthy tree can scarcely be found in this section of the state. I trust yon will call out some of your Yankee correspondents, who will give us some light on this subject. Very resp't yours, C. C. Safford. Cleveland, O., Jan. 10, 1852.