We would expect paraffin-oil applied to Peach-trees to do them very serious injury, if it did not kill them. We have known carbolic acid, at the rate of 1 ounce to the gallon of water, clear Peach-trees of scale, and do them no harm.

A. B. C #1

Front ventilation alone will not be sufficient ventilation for your Peach-house. There should also be means of ventilation at the highest part of the house. There is no objection to the method recommended in the work you name, but we do not consider it necessary for Peaches.