Dear Sir: Having learned, by unpleasant experience, that enthusiasm in the development of hidden truths, either in ethics or science, ofttimes entails ridicule upon the humble devotee, I have almost abandoned the hope of being able to divert attention from the seen and obvious to the hidden truth of nature. Myself an humble individual, without that pecuniary position which, in our day, secures for the shallowest observer a hearing and respect, it was my aim to keep my name from before your readers, lest it might do injury to the subject discussed. You have thought proper, however, to publish it over a scrap relating to the "Fungus," which causes the "leaf blight and cracking of the pear." This inquiry, we may safely conclude, belongs to the science of pomology, so-called; then why do not pomologists busy themselves to investigate and explain it ? Strange, that theory after theory has been promulgated and withdrawn, not one of these, as yet, sufficient to account for the phenomena in all its bearings. Some months ago, in reply to an inquiry, I communicated the inclosed article to an agricultural monthly, but whether it was out of place, or too abstruse, it was lost sight of. A late article in the Gardeners' Chronicle restates the facts deduced from further investigations.

In order to explain the matter, it may be advisable to give the article to your readers; -