The Republic of Texas made many headright grants, that is, grants given on the condition that specified requirements be met by the grantees. Land grants made under colonization contracts amounted to 4,494,806 acres. Both the republic and state granted lands for military service in the form of bounty and donation grants. For other internal improvements a total of 138,640 acres was granted (see LAND GRANTS FOR INTERNAL IMPROVEMENTS). Finally, special education land grants totaling 172,319 acres were made by the Republic of Texas to private colleges and seminaries.