We have alluded to a list of prizes offered by the American Institute for essays on given subjects. Among these we find a silver medal for the best new varieties of spring Wheat, winter Wheat, Oats, field Corn, and seedling Potato. A silver medal for the best seed-ling Apple, Pear, and Grape. A gold medal for the best essay on the culture of the Pear. A silver medal for the best essay on the culture of the Peach. A gold medal for the best essay on the culture of the foreign Grape; the same for the native Grape. A silver medal for the best essay on the culture of the Strawberry. A silver medal for the best essay on preserving ripe fruit. A silver medal for the best essays each on cultivating the Potato, Asparagus, and Celery. A silver medal for the best essay on domesticating animals; another for poultry. There are silver medals also for Draining, Forcing Houses, Wine, Corn Sheller, etc. There is also a list of liberal prizes in the mechanical department. The reports are all to be handed in by the 31st of December. The circular of the Institute may be had by addressing James Renwick, LL. D., Corresponding Secretary, New York. The prizes are worthy of the consideration of all parties who feel an interest in these subjects.

We trust some good may result from them.