In so far as the Memorandum is concerned, its paragraph III states the objects for which the Association was established, as being, inter alia " " (e) To make from time to time bye laws for opening and closing of markets in cotton and the 747 times during which they shall open or closed; the making performance and determination the prohibition of specified classes of dealings and the time during which such prohibition shall operate; the provision of an dealing with 'Croners ' or ,Bear Raids ' in any and every kind of cotton and cotton transactions so as to prevent or stop or mitigate undue speculation inimical to the trade as a whole; the course of business between Original Members inter be or between any of them on the one hand, and their constituents on the other hand, the forms of contracts between them and their rights and liabilities to each other in respect of dealings in The Articles dealing with bye laws, the manner in which they are to be made as well as the subject to which they might relate is to be found in Articles 73 and 74.