There's comfort in melancholyWhen there's no need to explainIt's just as natural as the weatherIn this moody sky today....Well I looked at the granite markersThose tributes to finality to eternityAnd then I looked at myself hereChicken scratching for my immortalityJoni Mitchell, Hejira, 1976The battle of Gettysburg and the 9/11 terror attacks, 150 years apart, produced memorials that share a common theme: each expresses absence as its memorial theme. The dead cannot be seen, even in sculptural form: they have vanished into abstraction. At Gettysburg, the dead and numbered in the thousands. Survivors saw their colleagues vaporized (Faust 128). The damage and poisonous stench after the three days of battle in 1863 created a discourse about death of the magnitude that circulated in the aftermath of 9/ 11. The title of the winning design for the 9/11 memorial-''Reflecting Absence-made explicit a theme that has implicitly made its way into public spaces of mourning in America since Gettysburg's response to its tragedy provided the visual vocabulary of absence: relying on combinations of earth, stone, water, and names, rejecting the figurai, they establish a memorial vernacular of the missing. Gettysburg, the 9/11 Memorial, and two others that express this visual trope-the U.S.S. Arizona Memorial at Pearl Harbor and the Vietnam Veterans Memorial-are all among America's most prominent memorial sites, and all evoke the comfort of melancholy.From Gettysburg to 9/11 : The Visual Language of Absence at American MemorialsGettysburg's Civil War burials were the result of America's first experience with mass mourning. The 9/11 Memorial shares with Gettysburg features that in 1863 were unprecedented: a shared community of mourners, still reeling from the enormity of the event, produced a message of equality and absence combined (Faust 69, 100-01; Haas 49; Wills 29-30). At Gettysburg's National Soldiers' Cemetery, the flat markers are identical in shape and typeface, and all are embedded in the soil. Unknown appears interspersed with names and ranks. The dead are indistinguishable from one another, the absent equally absent. Conveying the message of missing in turn relies on abstraction: its lines are rectilinear and nonfigural, inviting looking inward or imagining beyond. Precluding hero worship, Gettysburg relies on evenly spaced semicircles of headstones to convey its message. The first American memorial commemorating violent mass deaths evokes absence through abstraction.This same visual message is found at America's memorials to imponderable mass tragedies that occurred after Gettysburg: the attack on Pearl Harbor, represented by the U.S.S. Arizona Memorial; the Vietnam Veterans Memorial; and the National 9/11 Memorial and Museum. The U.S.S. Arizona visitors' center is a simple rectangular box built on the waters above the sunken ship Rising bubbles from the ship's leaking oil tanks, visible in an open well inside, and the round armament that once housed one of the ship's turrets are the only surface signs of the graveyard of the ship's rusting hulk below. The memorial structure does not touch the ship (Delgado 77). The bodies of the dead remain out of sight and out of reach. The Vietnam Veterans Memorial lists the names of the dead in order of their deaths on a planished wall embedded in soil. From the northwest approach, the nestled wall is invisible. The first memorial to mark a long war, rather than a single event, with the message of absence, the wall of names represents a variation on Gettysburg's heritage: the community marked the tragedy both of the deaths and of their political ambiguity (Haas 16).Other memorials to the lengthy process of war and their dead do not speak the language of absence. Memorials to the dead of World War II and the Korean War are exemplars of figurai presence, that to the Korean War Memorial literally, and that to World War II implicitly. …