CHAPTER XII.--Mechanism of Delivery in Presentations of

the Lower Extremities, 191 Delivery in a Breech Presentation in the left Anterior Sacro-Iliac Position, 192 Delivery by the Breech in the Right Posterior Sacro Iliac Position, 196 Delivery by the Breech in the Full Posterior, or Sacro Sacral Position, 196 General Remarks on the Presentation of the Lower Extremities, 197