97

O.17

Though no rules confine pure Play, yet one or two suggestions may be pardoned. If one's observations and reflexions are allowed to specialize themselves too much, the Play is converted into scientific study; and that cannot be pursued to advantage without the entire devotion of a life. To be sure, for one who is prepared and able to pay this price, no other mode of life can be more useful and everyway satisfactory. Only, it will not be recreation; and the student of science needs recreation as well as anybody else. If one who had determined to make trial of cognitive