The Agassiz Association is now so large, so widely known, and so firmly established, that, in order to protect ourselves from the annoyance of frivolous persons who, taken by the novelty of the idea, seek to join us just for the fun of the thing, and then drop away after a few weeks, we have decided to make the gates of admission swing just a trifle less easily. The following circular will, therefore, be sent hereafter to all who seek admission. It will be seen by every one that its requirements are sufficiently liberal: "PLEASE READ EVERY WORD CAREFULLY. "The Agassiz Association is a Society for the observation of nature. It is composed of 'Chapters,' which, apart from the common name, constitution, and badge, are free to follow their own pursuits under the direction of the President of the A. A. The smallest number recognized as a Chapter is four, but after a branch has once been admitted, and has continued active for six months, it is not then cut off, though its membership should decline below four. "There is no entrance fee for Chapters, nor any charge for registration, or for the advertising of 'Exchanges' in ST. NICHOLAS. There are no assessments, nor any "dues." The special classes, occasionally conducted by eminent scientists, are freely open to all members. The only necessary expense is 54 cents for the A. A. Hand-book. Engraved charters can be obtained for $1.25 each, as many Chapters and individual members wish them, but there is no obligation to purchase them. As we make no charges, we appreciate generous orders for the little hand-books, whose sales about cover the expenses of our enormous correspondence--usually nearly every member is glad to secure a copy. _Individuals who join us without organizing a Chapter, are charged a fee of 50 cents in addition to the price of the Hand-book._ "Kindly fill out the inclosed application form and card (_excepting 'No. of Chapter'_), and return them at once. Then, if accepted, the certificate, number, and letter will be sent. It must be made one of your by-laws that your Secretary send to the President a carefully prepared report at least once a year, and should you at any time be compelled to disband, immediate notice must be sent and the charter returned. "The ST. NICHOLAS magazine is our only official organ, and it should be found on the table of every Chapter; this, however, is not compulsory. In the November, 1885, issue of ST. NICHOLAS, will be found full directions for the annual reports, which are required from every Chapter. "Badges are no longer to be had from Mr. Hayward, but should be ordered through the President. "APPLICATION FOR A CHARTER.