92 SYDNEY E. JOHNSON 
* Fig. 2. Transverse section of the seventh lumbar internodal segment of a 
normal specimen. There is no apparent special grouping of the medullated fibers, 
and no preponderance of any one size. There are a few fibers less than 1.54 in 
diameter, a great many from 1.5 to 7y, and a small number from 7 to10u. Camera 
sketch. Osmie acid. X 440. 
Fig. 3 Transverse section through the first sacral ganglion. Same specimen 
as illustrated in figure2. Most of the medullated fibers are grouped in a crescent- 
shaped bundle in the periphery of the ganglion. A detached fascicle (a) could 
be traced through the entire ganglion. A fair-sized bundle of fibers (b) runs from 
fascicle (a) to the forming ramus (c). A few small medullated fibers are seen 
scattered throughout the ganglion. Osmic acid. Camera tracing. X 136. 
Fig. 4 Transverse section of the first sacral internodal segment, approxi- 
mately midway between the first and second sacral ganglia. Ganglion cells were 
scattered throughout the length of the internode, and five cells appear in this 
section. Osmic acid. Camera sketch. X 300. 
