CHARGES MUST BE PREPAID.
Should you send a vial of urine for analysis, about a cupful will do, and all express charges on it must be prepaid. All liquids are excluded from the mails, when discovered, and yet we have received hundreds of samples through the mails safely when put in homoeopathic or other very small vials, well corked and carefully packed in a light tin can or wooden box, or in a light pine stick bored out hollow, the vial being carefully packed in sufficient saw-dust or blotting paper to absorb all liquid should the vial get broken. Letter postage, that is, two cents for each one ounce or fraction thereof, must be paid upon these sealed packages. Send the first urine that is passed after rising in the morning.