Although a continuous system, it is best described by recognising in it three distinct parts: (a) The Solar Plexus. (b) The Podophyllous Plexus. (c) The Coronary Plexus.

(2) By the Circumflex or Peripheral Vein of the Toe, a canal formed by ramifications from the solar and the podophyllous plexuses, and following the direction of the artery of the same name.

(b) The Podophyllous or Laminal Plexus.

The podophyllous veins anastomose below with the circumflex vein of the solar plexus, and above with the veins of the coronary plexus.

This proceeds from the podophyllous, the intra-osseous, and the solar networks, and consists of a central and two lateral parts.

The deep layer is formed, as before described, by ascending branches from the posterior parts of the podophyllous and solar plexuses, and by branches from the intra-osseous system of the pedal bone.

The Podophyllous Tissue, or the Sensitive laminæ.

The sensitive laminæ, or podophyllous tissue; 2, the coronary cushion; 3, the perioplic ring; 4, portion of plantar cushion; 5, groove separating perioplic ring from coronary cushion; 6. the sensitive sole.]

3. THE PODOPHYLLOUS TISSUE, OR SENSITIVE LAMINÆ.This portion of the keratogenous membrane is spread over the anterior face and sides of the os pedis, limited above by the coronary cushion, and below by the inferior edge of the bone.