1905.] 



Cord of the Macaque Monkey. 



97 



(c) Section Area of the White Substance. (W.) 

 Table III. — Section Area of the White Substance (Charts I and VI). 



Eegion of cord. 



Distance in cm. 

 from, uppermost 



section of 

 I Lumbar region. 



Planimeter 

 measurement 

 in sq. cm. 



Actual area 

 as calculated 

 in sq. mm. 



Dorsal (thoracic) — 



VI 



XII 



LumbaT — 



f Upper .... 

 I i Middle . 



[ Lower 



f Upper 



11-^ Middle . 

 L Lower . . . 



(" Upper 



lll-i Middle 

 {.Lower .. 



{Upper .. 

 Middle 

 Lower .. 

 f Upper .. 

 Y-l Middle 

 |_ Lower .. 

 f Upper . . 

 VI 4 Middle 

 (.Lower .. 

 f Upper . . 

 VII •! Middle 

 [ Lower .. 

 Sacral — 



f Upper . . 

 li Middle 

 I. Lower . . 

 [ Upper . . 

 II < Middle 

 (. Lower . , 

 f Upper . . 

 Ill I Middle 

 I Lower . 



f Upper 



TV< Middle 

 [ Lower . . 

 Coccygeal — 



f Upper . . 

 li Middle 

 [ Lower . . 

 f Upper . . 

 11^ Middle 

 [Lower .. 

 f Upper . 

 Ill 4 Middle 

 [Lower . 



0-142 

 0-268 

 0-608 

 0-846 

 1 -058 

 1 -302 

 1 -558 

 1 -681 



1 -918 

 2-064 



2 -244 

 2 -484 

 2 -608 



2 -794 

 •944 

 •154 

 •205 

 •328 

 •450 



3 -557 

 3 -642 



3-782 



3- 906 



4- 057 

 4-197 

 4 -316 

 4 509 

 4-623 



4 -723 

 4-858 



4- 974 



5 -138 

 5 -312 



5- 486 

 5 -622 

 5-726 



5 -847 



5- 939 



6- 058 

 6-174 



6 -278 

 6-331 



33 88 

 38 -24 



40- 52 

 40 -64 



40 -26 



41 -54 



41 -18 

 44-26 



43 -62 



42 -68 

 42 -80 

 49 -30 



49 -54 



50 -70 

 49 -06 



44 -32 



41- 90 

 35 -62 



34 -49 

 27 -72 

 24 -60 

 22 -68 

 20 90 



18 -12 

 16 -66 

 14 -38 

 13 -64 

 12 -32 

 10 -60 



10 -24 

 9 -10 



7- 66 

 7 14 

 6-68 

 6-18 



5 02 

 4-48 

 3-98 



11 -72 

 10 -58 



8- 16 

 1-59 

 5 -38 

 1 -08 



8-470 

 9 -560 



10 -13 

 10 -16 

 10 -07 

 10 -39 



10 -30 



11 -07 

 10 -91 

 10 -67 



10 -70 



12 -33 

 12 -39 

 12 -68 

 12 -27 



11 -08 

 10 -48 



8 -905 

 8 -623 

 6 -930 

 6 -150 

 5 -670 

 5 -225 



4 -530 

 4-165 

 3 -595 

 3-410 

 3 -080 

 2 -650 

 2 -560 

 2-275 

 2 -915 

 1 -785 

 1-670 

 1 -545 



1 -255 

 1-120 



9950 

 -7325 

 -6612 

 -5099 

 -3975 

 -3362 

 -2700 



The section area of the white substance (W) (Chart I, Table III) increases 

 from the region of the first lumbar to that of the fourth lumbar nerve, and 



