142 Miss M. P. FitzGerald. The Lumbosacral-coccygeal [June 17, 



Chart _ZZZ\ 



Fig. 1. Fig. 2. 



Chart XXI. 



Cl. Diagram. — General Configuration of the Lumbo-sacral-coccygeal Cord in Sectional 



Area. 



The figures (1, 2) are drawn to scale. The actual length of the cord is increased two-and- 

 a-half times, and the sectional area to twice its actual value. Mean sectional area 

 figures are employed. It must be remembered that the sectional area is plotted in one 

 dimension, and that the width of the cord from side to side is not represented* (see p. 144). 



Fig. 1. — Area of the cross-section of the cord Eeavy black line. 



Section area of grey substance Red dotted line. 



„ 2. — Area of the cross-section of the cord Heavy black line. 



Section area of the grey substance Red dotted line. 



„ „ dorsal white columns Thin black broken line. 



„ „ ventro-lateral white columns... Thin black continuous line. 



