"                "Longitude"              
[10] "Min.depth"               "Max.depth"               "Depth"                  
[13] "Period"                  "Dating"                  "Earliest.date"          
[16] "Latest.date"             "Date.range"              "Mid.point.of.date.range"
[19] "Probability"             "Place.of.origin"         "Place.of.destination"   
[22] "Reference"               "Comments"                "Amphorae"               
[25] "Marble"                  "Columns.etc"          