The Commissionership 65 American ministers and consuls in foreign countries. The Depart- ment exchanged 3,450 packages of seed with foreign governments in 1871, and frequently received plants that could not be bought from commercial establishments. Reports by the Department stressed the fact that this work had paid high dividends in establishing amicable relations with other countries, and that much valuable agricultural information was exchanged. This informal exchange of seeds and plants continues to the present time, and is a natural outcome of the association between plant explorers and agriculturists. BIBLIOGRAPHY 1. Ross, E. D., "The United State Department of Agriculture During the Com- missionership," Agricultural History, XX, July, 1946.