The students of Harvard have made one great advance in securing a reduction in the cost of living expenses for themselves by the formation of the Co-operative Society, and in this enterprise they have met with signal success. A correspondent in this issue calls attention to a matter in which this rebates could be advantageously carried still further - namely, in securing reductions in students' fares from the leading railroads entering Boston. This is certainly a question that interests a large number, and if it could be settled satisfactorily it would result to the advantage of all. Of late years a gratifying increase has been noticed in the number of students coming to Harvard from States other than those of New England. No doubt this increase would be more marked if it were not for the great distance of Boston from the Western and Southern States and the correspondingly great cost of travel between these points and Boston. How much the enterprise of the Yale students, in annually securing reduced railroad rates, contributes to the large Western representation in that college it is impossible to say, but it may be safely estimated to be a considerable influence in securing that result. If, as our correspondent suggests, some way were found of securing permanently reduced rates of fare for the students of Harvard on one or more of the trunk lines leading from Boston, and this should come to be a matter of general public knowledge, there can be no doubt that many who would otherwise be deterred from entering Harvard, owing to the great distance and expense of the trip, would thereby be induced to enter. By the establishment of admission examinations at Cincinnati, San Francisco and Chicago, the corporation has shown that it recognizes the force of this influence in preventing or inducing men to enter college, and undoubtedly if it should bring its influence to bear it could secure the desired reductions.