GENERAL GUIDELINES Mail must be securely packed so that no damage is caused while being stamped or in transmission. BOOK PACKET Must be posted either without a cover, but not holding the packet so together as to prevent as to prevent easy examination, or in an unfastened envelope or cover which can be easily removed for examination without breaking any seal or tearing any paper or separating any adhering surface. If containing Greeting Card or printed invitation, to be prominently superscribed GREETING/INVITATION below BOOK PACKET. PATTERN AND SAMPLE PACKET To be posted without cover, or with cover open at both ends, or in unfastened envelope or cover that can be easily removed to admit ready examination of contents. Samples of seeds, drugs and other articles which cannot be sent in unfastened envelope may be sent in a box or bag, fastened in an openable manner. If sent in air-tight case, nature of contents should be certified under the full signature of sender, giving his address. Impression of the name stamp of the firm is acceptable in place of signature. Things of glass or other fragile material must be securely packed in a box of metal, wood or strong corrugated card-board to prevent injury to other mail and to officials. Liquids, oils and substances, that easily liquify must be enclosed in hermetically sealed receptacle. The receptacle should be placed in a special box of metal, strong wood, or corrugated cardboard containing spongy material in sufficient quantity to absorb the liquid in case the receptacle breaks while in transmission. Lid of the box must be properly fastened. Fatty substances that do not easily liquify must be enclosed in an inner cover which should be placed in a box of metal, wood, or strong and thick leather. Dry powders must be enclosed in box that will prevent all danger, and permit ascertainment of contents. BLIND LITERATURE PACKET To be posted without a cover or in a cover or in a cover open at both ends, for examination of contents. Name and address of the sender should be written or printed on the packet. REGISTERED NEWSPAPER News paper, whether single copy or bundle of more than one copy, should be posted without a wrapper, or with a wrapper open at both ends, or in an unfastened envelope, easily enabling examination of the contents. Stapling is allowed, provided it allows examination of contents without removing the staple. The Registration mark should be clearly visible, and not covered by wrapper/envelope. Sender should mark on bundle of newspapers TO BE DELIVERED AT WINDOW  PARCEL Must be packed and enclosed in a reasonably strong case, wrapper or cover which should be fastened, to preserve the contents, and to protect other mail. If containing cloth or woolen material, to be packed in a strong wrapper with an outer covering of stout card-board or cloth. Contents of great value, like gold, must be packed in a metal container or a wooden or stout card-board case. Liquids, oils and substances that easily liquify, must be enclosed in a double receptacle; first receptacle to be placed in a special box of metal, strong wood, or corrugated cardboard containing spongy material in sufficient quantity to absorb the liquid if the receptacle  breaks. Lid of the box must be properly fastened. Live bees must be enclosed in box that will prevent all danger, and permit ascertainment of contents. Human and other viscera and brains of rabid animals : can be sent only for the purpose of medical  or chemical examination. It must be enclosed in a glass bottle or jar, with a tight stopper or sound cork. If alcohol is used as preservative, a ring of wax must be placed round the lip of the bottle to cover the shoulder of the stopper. Stopper should be fastened down with bladder or leather and sealed. Bottle or jar should be placed in a strong wooden or tin box, with at least 18 mm thick raw cotton wool between the two, and the box encased in cloth, securely closed and sealed at intervals of 8 cm at least. Wax of same kind, and the same distinctive seal mark should be used for all