154. Every information relating to the commission of a cognizable offence if given orally to an officer in charge of a police-station, shall be reduced to writing by him or under his direction, and be read over to the informant; and every such information, whether given in writing or reduced to writing as aforesaid, shall be signed by the person giving it, and the substance thereof shall be entered in a book to be kept by such officer in such form as the Government may prescribe in this behalf.