A correspondent desires to know what in the world is the meaning of the premium offered in the New Orleans Exhibition for "apple trees of seventy-five kinds? What nursery grows seventy-five kinds of apple trees?"

So far as we see, there is no limitation that these are all to be grown by one person or firm in his nursery. In agricultural colleges large collections in the orchards would be very instructive; and when "making money" and the "nursery and fruit business" are not thought to be objects for which colleges are instituted, a great number of varieties of fruit, in order to educate the young to a knowledge of varieties, would be a very good thing to have around. But we do not know whether the object of the premium was to encourage such orchards.