Dear Sir: It has been my pleasure to receive instruction from the pages of the Horticulturist for some years. We have some fine Grape lands along the shore of Lake Erie, In our county, and although Grapes have been successfully grown for thirty years, it is quite recently that attention to vineyard culture has been awakened. Isabella and Catawba are principally grown. The former has been in high repute, but seems more liable to mildew than some others. Catawba is quite healthy, and is growing in favor. It will ripen here almost as well as the Isabella. Concord is beginning to give fruit, and is coming more into favor the better it is known. Its perfect bunches and large berries, with its certainty of maturing, make large amends for its lack of quality. We have fruited several other kinds, but will defer a description.

I would like to know if Diana requires any peculiar management. Does close pruning in. jure it? Mildew was very bad last season on the Isabella. In my observations on the different vineyards last season, I found where the ground was in high condition, and often stirred, it was most severe. In vineyards where weeds and grass were allowed to grow, and on some single vines where there was no cultivation, there was little or none of the mildew.

Will you, Mr. Editor, please tell us all you know? (Editors must have no secrets.) We do want light on Grape culture in particular. Yours truly, A. S. Moss.

Fredonia, N. Y., Feb., 1861.

[Isabella and Catawba are both liable to mildew and rot, the latter especially. We are glad to know that the Catawba has thus far escaped with you. You will be fortunate if you enjoy this immunity for any length of time. Concord is a good grape; when well cultivated, about equal to the Isabella, and much larger and more certain. The Diana does not require peculiar management; it requires good management. Close pruning injures it, as it does all other grapes. Stirring the soil in such a way as to disturb the roots would tend to increase mildew; stirring the soil without this would tend to check it; so that you might very well have seen the conditions you name. We, on the contrary, saw a vineyard of some two acres, very weedy, from which not fifty pounds of grapes were gathered; but the weeds were not alone concerned in this. You may rest assured that judicious culture is always beneficial, however exceptional cases may seem to militate against it. We desire to have no secrets from our readers; but, on the contrary, to tell them whatever we may know; so let them ask freely.

We have begun a series of articles which we hope may throw some light on Grape culture, at least in regard to those who are beginners. - Ed].