As is usually the case, it seems more and more that Marsh "knew what he was talking about". It appears now that we can settle the question as to the kind of a head Diplodocus had. We have now a skull almost if not quite articulated with the neck. The neck, so far as we can see it, looks like that of diplodocus and the skull is certainly very like what we have called Diplodocus. The skull looks a little different in proportions but I think the muzzle is somewhat compressed laterally. Apparently the atlas is almost articulated. A few of the anterior vertebrae are disjointed but I think every one is there and none of them more than a foot out of place