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



B5. Ratio of the Dorsal Columns and of the Ventro-lateral Columns to the 



Dorsal Horns. 



Table XVIII. — Eatio of the Dorsal Columns and of the Ventro-lateral 

 Columns to the Dorsal Horns taken as Unity in each Cross-section 

 of the Cord (Chart XVII). 



Region of oord. 



Distance in cm. 

 from uppermost 



section of 

 I Lumbar region. 



Dorsal columns. 

 Dorsal horns. 



Mean. 



Ventro-lateral 



columns. 

 Dorsal horns. 



Mean. 



Dorsal (thoracic) 



VI 



XII 



Lumbar — 



f Upper . 

 1^ Middle . 

 L Lower . 

 f Upper . 

 II ^ Middle . 

 l_ Lower . 

 f Upper . 



III <^ Middle . 

 I Lower . 

 f Upper 



IV i Middle . 

 L Lower 



(" Upper . 



Middle . 

 [ Lower . 

 f Upper . 

 VI i Middle . 

 [Lower . 



{Upper . 

 Middle . 

 Lower . 

 Sacral — 



f Upper . 

 [I < Middle . 

 [ Lower . 

 I" Upper . 

 11^ Middle . 

 I, Lower . 

 f Upper . 



III < Middle . 

 I Lower . 

 f Upper . 



IV 4 Middle . 

 [ Lower . 



Coccygeal — 



f Upper . 

 l< Middle . 

 L Lower . 

 f Upper 

 II < Middle . 

 [ Lower . 

 f Upper . 

 1 11^ Middle . 

 [ Lower . . 





a oo 





3 "31 



'142 



2 34 



"268 



2 "73 



"608 



2 "53 



U 04u 



O .OA 



1 '058 



2 12 



1 -302 



2 22 



1 '558 



2 '34 



1 '681 



2 '31 



1 "918 



2 '37 



2 '064 



2 '40 



2 "244 



1 "99 



2 '484 



2 '00 



2 '608 



1 '91 



2 '794 



1 '51 





1 '38 



3 -154 



1 12 



3 '205 



1 -14 



3 -328 



0-383 



3 '450 



0-825 



3 -557 



0-736 



3'642 



0-769 



3 '782 



0-662 



3-906 



0-582 



4 -057 



0-564 



4'197 



0-568 



4-316 



-623 



4 509 



0-595 



4 -623 



0-598 



4-723 



-604 



4 -858 



0-595 



4-974 



0-500 



5 -138 



0-484 



5 -312 



0-510 



5-486 



0-391 



5-622 



0-411 



5 -726 



0-376 



5 -847 



0-368 



5 939 



0-376 



6 -058 



-358 



6-174 



0-281 



6 278 



0-272 



6 -331 



0-288 



2 -53 

 2 IS 

 2 -34 

 2 13 

 1-60 

 1 08 

 0-776 



0-602 

 0-595 

 0-577 

 -498 



-392 

 0-367 

 0-280 



68 

 77 

 08 

 11 

 03 

 38 

 40 

 45 

 79 

 79 

 07 

 40 

 28 

 45 

 93 

 54 

 62 

 07 

 53 

 15 

 41 



28 

 05 

 09 

 09 

 12 

 99 

 14 

 90 

 75 

 68 

 62 

 65 



43 

 41 

 45 

 46 

 42 

 43 

 38 

 61 

 54 



