THE STUDY OF THE NERVOUS SYSTEM. II 



with the vertical face of the frontal bone. The terms horizontal 

 and frontal may be used interchangeably to indicate such sections. 

 Sections taken at right angles to both of these and paraUel with 

 the median vertical plane of the body are called sagittal sections, 

 since in man such sections are parallel with the sagittal suture of 

 the skull. 



