LIST OF ILLUSTRATIONS 



FIO. PAOE 



124. Diagram to illustrate the endings of tVie Auditory 



Nerve in the Membranous Labyrinth and 

 Cochlea 392 



125. Longitudinal Section of Ampulla, cutting the Crest 



Cro.sswise 394 



126. Horizontal Section of the Eyeball 400 



127. Pigment Cells from the Choroid Coat 401 



128. View of Front Half of the Eyeball seen from 



Behind . 403 



129. The Formation of an Image on the Retina . 408 



130. Diagram of the Images of a Candle-Flame seen by 



Reflection from the Surface of the Cornea and 



the two Surfaces of the Lens 410 



131. The Changes in the Lens in Accommodation ... 411 



132. The Muscles of the Right and Left Eyeball ... 414 



133. Front View of the Right Eye 416 



134. A Front View of the Left Eye 417 



135. The Eyeball divided Transversely in the Middle 



Line and viewed from the Front 418 



136. Diagrammatic Views of the Nervous and Con- 



nective Elements of the Retina 420 



137. Diagram in illustration of the Nervous Structure 



of the Retina 421 



138. A Diagrammatic Section of the Macula Lutea, or 



Yellow Spot . 423 



1.39. Pigmented Epithelium of the Human Retina. 



(Max Sehultze) 424 



140. Diagram of a Rod and of a Cone 425 



141. Diagram of Images on the Retina 428 



142 Diagram, as seen from the Front, of the Spinal 



Cord and the Spinal Nerves .... ... 455 



143. Transverse Section of one-half of the Spinal Cord 457 



144. The Spinal Cord .458 



145. Transverse Section of a Medium-sized MeduUated 



Nerve 459 



146. To illustrate the Structure of Nerve Fi])res . 462 



147. A Neuroglia-Cell from the White Matter of the 



Spinal Cord. (Schiifer^ 466 



148. A Large Nerve Cell from the Anterior Horn of 



the Spinal Cord 467 



