The letter from the president of the Co-operative Society to the Board of Directors of the Society, published in this morning's issue, shows that the society is in a very gratifying condition. The service of the society to the students has been so great since its organization that we may well feel a special interest in its success. It is no exaggeration to say that it saves thousands of dollars to the students of the University every year, both directly to those who buy their books and furniture from it, and indirectly to those who never spend a cent in its store, for by competition it has forced the tradesmen of Cambridge to abandon their former extortionate prices. The success of last year is in great measure due to the large business done, but a great deal of its due to the very able way in which the affairs of the society have been managed. The students have had confidence in the society and have traded with it because their wants have been attended to promptly and satisfactorily and because they have recognized that the society is being run on sound business principles. There is every indication that last year's success but foreshadows a greater success this year. The sales of the first week this year are $2500 in excess of those of the first week last year. It is certainly to be hoped that the business of the whole year shall be equally prosperous.