The Mount Vernon beds, which occur about the middle of the series, have as yet yielded only a small number of species, though these include the most interesting early Angiosperms. Among them are recorded a Casuarina, a leaf of Sagittaria (which however, as observed by Zeiller, may belong to Smilax), two species of poplar-like leaves with remarkably cordate bases, Menispermites (possibly a water-lily) and Celastrophyllum (perhaps allied to Celastrus).
The postal authorities objected to the name Monticello, originally used, and Mount Vernon was adopted instead.
West Mount Vernon was founded by the Teutonic Homestead Association and was annexed to Mount Vernon in 1869.
In March 1785 commissioners from Virginia and Maryland met here to discuss the commercial relations of the two states, finishing their business at Mount Vernon on the 28th with an agreement for freedom of trade and freedom of navigation of the Potomac. The Maryland legislature in ratifying this agreement on the 22nd of November proposed a conference between representatives from all the states to consider the adoption of definite commercial regulations.
Lawrence had served with Fairfax at Cartagena, and had made the acquaintance of Admiral Edward Vernon, from whom Mount Vernon was named.
Charitable and Penal Institutions.-The charitable and penal institutions of the state include the penitentiary at Jefferson City, opened in 1836, which is self-supporting; a training school for boys at Boonville (opened 1889), an industrial home for girls at Chillicothe (established 1887), hospitals for the insane at Fulton (1847), St Joseph (opened 1874), Nevada (1887), and Farmington (1899); a school for the blind at St Louis (opened 1851); a school for the deaf at Fulton (opened 1851); a colony for the feeble-minded and epileptic at Marshall (established 1899); a state sanitorium, for consumptives, at Mount Vernon (established 1905, opened 1907); a Federal soldiers' home at St James, and a Confederate soldiers' home at Higginsville (both established 1897).