There were also six lines of river steamers receiving subsidies from the national government in 1904, and the aggregate paid to these and the coastwise lines was 2,830,061 milreis.
Although the postal rates are high, the service is not self-sustaining, the receipts for 1904 being 7, 01 8,344 milreis, against a total expenditure of 10,099,545 milreis.
The exportation for 1906 was 69,761,123 lb of Hevea, 5,871,968 lb of manicoba, and 1,440,131 lb of mangabeira rubber, the whole valued at 12 4,9 1,433 milreis gold.
The export in 1906 amounted to 127,417,950 lb, officially valued at 16,502,881 milreis gold.
To illustrate the comparative productiveness and relationship of these sources of national wealth and industry, the following official returns of export for the years 1905 and 1906 are arranged in the four general classes previously discussed, the values being in Brazilian gold milreis, worth 2s.