habits, ability, and adaptability.  These reports shall be preserved on file, and the Commission may prescribe the form and manner in which they shall be made.

4.  Any person appointed to a position which belongs to one of the recognized mechanical trades may upon reporting for appointment be subjected to a practical test under the supervision of a board designated by the Commission, and if he or she fails to attain a general average of 70 per cent on a maximum of 100 per cent he or she shall be rejected for appointment.

5.  In case of public and pressing exigency, demanding the immediate employment of skilled and experienced workmen who can not be at once supplied in the manner provided for in section 2 of this rule, or by transfer under Rule VI, or reinstatement under Rule VII, there may be employed without examination or certification for a period not to exceed thirty days, which with the consent of the Commission may be extended in periods of thirty days each, any persons who have the requisite knowledge or experience who may be available:  Provided, That no person shall serve more than ninety days in any one year under such temporary appointment.  The year limitation in regard to appointment shall begin to run at the date of the original appointment.  Every such temporary appointment and also the discontinuance of the same shall be at once reported to the Commission.

  RULE V.

1.  Until promotion regulations shall have been applied to the classified service of the Government Printing Office promotions therein may be made upon any test of fitness determined upon by the Public Printer if not disapproved by the Commission.

  RULE VI.

  1.  Transfers may be made as follows: 

(a) From a position in the classified service of the Government Printing Office requiring a knowledge of some mechanical trade to a position in any one of the Executive Departments requiring a knowledge of the same mechanical trade, upon requisition from the head of the Department to which the transfer is to be made and the consent of the Public Printer:  Provided, That a person so transferred shall not be transferred to another position in one of the Executive Departments unless such other position requires a knowledge of the same mechanical trade upon which the original transfer was based, nor until he has served one year in the position to which he was originally transferred.

(b) From any Executive Department to the classified service of the Government Printing Office upon requisition from the Public Printer and the consent of the head of the Department from which the transfer is to be made.

2.  No person shall be transferred as herein authorized until after absolute appointment and until the Commission shall have certified to the officer making the transfer requisition that the person