3 and are being exchanged within the prescribed period for stamps of equal value in the current series; (iv) accept from dealers in or collectors of postage stamps standing orders for the supply of new issues or new printings of postage stamps; (v) address “ first-day covers”, affix postage stamps thereto or make any special arrangements for the cancellation of stamps thereon; (vi) in any way whatsoever act as the agent for any dealer in or collector of postage stamps. 22B. Merson or Posting LETTERS OTHER THAN REGIS- TERED LETTERS, (1) Letters other than letters for registration shall not be handed to any person employed at a Post Office to be posted by him but shall be posted by placing them in a letter box after the appropriate postage stamps have been affixed thercto. (2) Notwithstanding the provisions of paragraph (1) of this rule, in the case of circulars for posting in bulk, items with the appropriate postuge stamps affixed thereto and tied in bundles with all the ad- dresses in one direction may be handed over the counter at, or forwarded to, a Post Oftice for post- marking and despatch.” 4. Amenpuent or Rub 43 (1) or THE PRINCIPAL Rutes and Reeurarions. Paragraph (1) of rule 43 of the Principal Rules and Regulations is hereby amended by the deletion of the words “not exceeding $7.68 for a parcel exceeding eleven pounds in weight or 54.80 for a parcel not exceeding eleven pounds in weight, as he may think just” appearing therein, aud the substitution therefor of