The final order of the Collector shall be in writing in his own hand, and shall contain the reasons for the decision. The decision shall be communicated to the. party in writing and simultaneously a notice in Form 'C' appended to these rules shall be served on him requiring him to vacate the land within specified period. The notice shall also contain a direction that every thing, found on the land encroached upon shall be forfeited to the Government in the event of the encroacher failing to vacate the land within that period specified.