Many of the authorities which I have already adduced, or to which I have referred, may convey a competent notion of some of our principal manufactures. Their general state will be clear from that of our external and internal commerce, through which they circulate, and of which they are at once the cause and effect. But the communication of the several parts of the kingdom with each other and with foreign countries has always been regarded as one of the most certain tests to evince the prosperous or adverse state of our trade in all its branches. Recourse has usually been had to the revenue of the Post-Office with this view. I shall include the product of the tax which was laid in the last war, and which will make the evidence more conclusive, if it shall afford the same inference: I allude to the Post-Horse duty, which shows the personal intercourse within the kingdom, as the Post-Office shows the intercourse by letters both within and without. The first of these standards, then, exhibits an increase, according to my former schemes of comparison, from an eleventh to a twentieth part of the whole duty.[50] The Post-Office gives still less consolation to those who are miserable in proportion as the country feels no misery. From the commencement of the war to the month of April, 1796, the gross produce had increased by nearly one sixth of the whole sum which the state now derives from that fund. I find that the year ending 5th of April, 1793, gave 627,592_l._, and the year ending at the same quarter in 1796, 750,637_l._, after a fair deduction having been made for the alteration (which, you know, on grounds of policy I never approved) in your privilege of franking. I have seen no formal document subsequent to that period, but I have been credibly informed there is very good ground to believe that the revenue of the Post-Office[51] still continues to be regularly and largely upon the rise.