The postal revenues for the year ending the 30th of June last were $12,438,233.78, and the expenditures of this department during the same period were $12,644,786.20, showing an excess of the latter of $206,532.42. The average annual receipts of this department from 1859 to 1861, inclusive, were $8,745,282.62, and the average annual expenditures for the same period were $14,482,008.44, showing an average annual excess of expenditures over receipts of $5,736,725.82; and the average annual receipts from 1862 to 1864, inclusive, were $10,871,530.97, and the expenditures, $11,694,785.72, showing an average annual excess of expenditures over receipts of $823,254.75.

The excess of receipts in 1864 over 1861, the first year of the rebellion, was $4,088,957.38.

Although the proportion of receipts as against the expenditures has doubtless been increased on account of the suspension of the postal service in the insurrectionary States, the above furnishes the evidence of an improving financial condition of the department highly creditable to the administration of my immediate predecessor.

The estimate of expenditure for 1864 was fixed at $13,000,000, in which was included the sum of $1,000,000 specially appropriated for the overland mail-service, being $355,213.80 more than the amount actually expended.

On the other hand, the revenues of 1864 were estimated at an increase of five per cent. on those of 1862, making $8,714,000, while they actually reached $12,438,253.78, or $3,724,253.73 more than the estimate. This increase equals 42-5/8 per cent.

The increase of expenditures in 1864, compared with those of 1863, is 11-5/8 per cent., and the increase in the revenues for the same year 11-3/8 per cent.

This exhibit promises an increase of the revenues for 1865 over the estimate submitted in the report of last year.

The revenues of this department for the year ending June 30, 1865, were $14,556,158.70, and the expenditures $13,694,728.28, leaving a surplus of $861,430.42.

The ratio of increase of revenue was 17 per cent., and of expenditure 8 per cent., compared with the previous year.

ESTIMATES FOR 1866.