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



B6. Ratio of the Dorsal Columns and of the Ventro-lateral Columns to the 



Ventral Horns. 



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

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

 of the Cord (Chart XVIII). 



Eegion of cord. 



Distance in cm. 

 from uppermost 



section of 

 I Lumbar region. 



Dorsal columns. 

 Ventral horns. 



Mean. 



Ventro-lateral 

 columns. 



Ventral horns. 



Mean. 



Dorsal (thoracic) 



VI 



XII 



Lumbar — 



I" Upper 



I \ Middle 

 L Lower 

 f Upper 



II \ Middle 

 [ Lower 

 f Upper 



III \ Middle 

 |_ Lower 

 (" Upper 



IV \ Middle 

 |_ Lower 

 I" Upper 



Y-l Middle 

 L Lower 

 f Upper 

 VI < Middle 

 [ Lower 

 f" Upper 

 VII 1 Middle 

 |_ Lower 

 Sacral — 



f Upper 



I I Middle 

 [ Lower 

 f Upper 



11^ Middle 

 [ Lower 



{Upper 

 Middle 

 Lower 

 (* Upper 

 IV i Middle 

 L Lower 

 Coccygeal — 



f Upper 

 1 1 Middle 

 [ Lower 

 I" Upper 

 II i Middle 

 I Lower 

 f Upper 

 III^ Middle 

 [ Lower 



142 

 268 

 608 

 846 

 058 

 302 

 558 

 681 

 918 

 064 

 244 

 484 

 608 

 794 

 944 

 154 

 205 

 328 

 450 

 557 

 642 



782 

 906 

 057 

 197 

 316 

 509 

 623 

 723 

 858 

 974 

 138 

 312 



486 

 622 

 726 

 847 

 939 

 058 

 174 

 278 

 331 



93 



05 



84 



58 



45 



43 



20 



12 



03 



829 



668 



632 



599 



512 



604 



422 



453 



458 



448 



463 



461 



447 

 437 

 411 

 417 

 442 

 453 

 434 

 468 

 445 

 443 

 442 

 456 



372 

 392 

 356 

 397 

 392 

 383 

 362 

 378 

 425 



— 



9 



•27 



— 



6 



•31 





5 



•01 



1 -93 



5 



•12 





4 



•42 





3 



•67 



1 -48 



3 



■43 





O 

 O 



•J.7 

 -hi 





2 



•77 



1 -11 



2 



•63 





2 



•51 





2 



•00 



0-709 



1 



•71 





1 



•76 





1 



■65 



0-571 



1 



•47 





1 



■37 





1 



•34 



-444 



1 



•44 





1 



■45 





1 



•37 



0-457 



1 



•43 





1 



■46 





1 



•54 



0-431 



1 1 



■54 





1 



•52 





1 



■53 



0-437 



1 



■52 





1 



•52 





1 



■55 



0-449 



1 



•47 





1 



•47 





1 



•49 



0-447 



1 



•48 





1 



■48 





1 



•36 



-373 



1 



•33 





1 



•37 





1 



•56 



0-390 



1 



•48 





1 



•55 





1 



■78 



0-388 



2 



•23 





2 



•28 



