The remark contained in your last issue respecting the necessity of truthful, candid, and open expression of opinion, in criticising horticultural works, deserves more than a passing attention. It should be repeated, re-printed, and re-read by every editor, gratuitous reviewer, or paid contributor. But more, it should be acted upon. Black mail has had its day. The basket of luscious fruit furnished for Dr. so-and-so's table, is but a sorry recompense for a fulsome puff wherein some new variety of Pear, or Apple, or Cherry, or Blackberry, or Strawberry, or Raspberry, or any other changeable fruit, is inflicted with malice prepense on the too credulous reader. Books are the guides of future generations. Great men may live and die; able cultivators and eminent pomologists, who have never contributed a line to horticultural literature, they pass away. The contemporary author who truly and perspicaciously writes the record of the operations of such men, does more for the good of future generations than most persons will give him credit for. The reviewer, who site down with prepossessed knowledge and experience, and a just and upright principle, as well as a high sense of honor, to remove the bad and train the rambling ideas of the writer, performs no mean service.

Delicacy, collators relations, sympathy for laborious toil just performed, the laborer still remaining unremunerated all these charitable and reasonable considerations, constrain the Jeffries of horticulture, unles hopelessly blind to bribes, and blandishments, and threats. But they must not. The cultiva ton must not be deluded by horticultural periodicals or societies. Books must be purged and worthless fruits condemned, at all hazards. We hold you, sir, the Editor of the leading horti cultural journal, accountable to the community; let not fear or favor bend you from you course. Let all fruit books be fairly reviewed, if at all; all fruits fairly tested, if at all; societie exposed who endorse without satisfactory evidence; all members who attempt or succeed fraud on societies, cashiered; and then we shall have a pure horticultural literature, and as orchard of truly described fruit You know the permanent benefits that would thus be secured to horticulture. S., Philadelphia. Pa.