In this paper I report four types of tumor of the orbit with which I have had personal experience: (1) osteoma of the orbit, (2) epithelioma of the lids and of the bridge of the nose, (3) carcinoma of the lacrimal gland and (4) melanoma.
In some of these cases exenteration was required, and in one all the manifestations were relieved by removal of the primary growth.
They are included in a single report because of the following facts: All the growths involved either the walls of the orbit or its contents. In some instances the growths involved the orbital contents other than the globe. This happened in the malignant cases which began primarily as epitheliomas of the lid and the bridge of the nose or as carcinoma of the maxillary antrum. In these cases the growths began outside the orbit and later involved its contents.
In some instances there