The Massachusetts Horticultural Society has offered: For the best essay upon our native plants, adapted for winter culture for their flowers, $25.00; for the best essay on our wild fruits, with hints towards their amelioration and cultivation, $25.00; for the best essay on any subject in pomology, selected by the writer, $25.00; for the best essay on any subject in floriculture, selected by the writer, $25.00; for the best essay suited to appear in the transactions of the Society, on any subject selected by the writer, $25.00.