How mail is transported and sorted on a train.
Mail is being sorted. Issue states that this is on board a train although the train is not seen. C/Us of mail bags being opened and letters being tipped out. Men sort mail into pigeonholes. A bag of mail is sealed with string and placed into a leather bag (a "net"?) which is then fixed to a metal lever. Shot of a postman walking up to a front door with a bag of mail over his shoulder and a letter in his hand. He puts the letter through the letter box.
Safety print exists.