xxvi LIST OF ILLUSTRATIONS 



508. Cell lining the neural canal of the newly-hatched rainbow trout, 



showing mitochondria in an embryonic nerve cell . . . 589 



509. Section through medullary plate of a rabbit embryo . . . 589 

 510. Section through medullary plate of closing neural groove of rabbit 



embryo 590 



511. Section through wall of later neural tube of rabbit embryo, showing 

 a stage in the differentiation of the ependyma cells and the forma- 

 tion of a myelospongium ....... 590 



512. Section of wall of forebrain of four-day chick embryo . . . 591 

 513. Diagram of a transection of the spinal cord of an early embryo, show- 

 ing the migration of neuroblasts toward the marginal veil, and 



the ventral nerve root . .591 



514. Transection of the spinal cord of a human embryo of four weeks . 592 



515. Transection of the spinal cord of an embryo chick . . . 593 

 516. Reconstruction of the anterior portion of the body of a chick, the 



head distinctly differentiated, seen from the surface . . 593 



517. Transection of the spinal cord of a child, seventh cervical segment . 595 



518. Diagram of the fiber paths of the spinal cord .... 518 



519. Transection of the spinal cord of a child, third sacral segment . 600 



520. Transection of the spinal cord of a child, fifth lumbar segment . 600 



521. Transection of the spinal cord of a child, eighth thoracic segment . 601 



522. Transection of the spinal cord of a child, fourth cervical segment . 604 



523. Median sagittal section through the brain 605 



524. From a section of the cerebellar cortex of man .... 606 



525. A Purkinje cell from the human cerebellar cortex . . . 607 



526. A Purkinje cell from the cerebellar cortex of the rabbit . . 608 



527. Diagram of the cerebellar cortex 610 



528. Left lateral surface view 01 cerebral cortex in man, showing the 



lobes, main sulci, and the larger functional areas . . . 612 



529.- -Large pyramidal cell of the cortex 613 



530. Scheme of the motor area of the cerebral cortex, showing the effect 



of various staining methods . . . . . . .614 



531. Disposition of the nerve fibers in the cerebral cortex of man . . 615 



532. Human cortex cerebri, motor area 616 



533. Human cortex cerebri, parietal lobe 617 



534. Human cortex cerebri, olfactory region . . . . .619 

 535. Section of the spinal cord and its membranes, from the upper thoracic 



region 621 



536. Dissection of eyelids and lacrimal apparatus .... 626 



537. Horizontal section of the right eyeball 627 



538. The anterior segment of a child's eye; meridional section . . 629 



539. From a meridional section of the human cornea .... 630 



540. Corneal corpuscles of the frog .... . 632 



