Post Office packft service. Return showing particulars of existing contracts for Post Office packet service; the amount contributed by India or the colonies towards the cost of the service; the estimated amount of sea postage (British share); the estimated loss on the service; the rate of postage per single letter; the estimated number of letters carried by the packets in both directions in 1871 and 1872; and the estimated gross postage on those letters (in continuation of parliamentary paper, no. 195, of session 1871) [electronic resource].