BLOOD VESSELS 



57 



'20). From this, table 23 has been formed and the values there 

 given are those used for chart 2. The unit volume used in 

 table 23 in 189/x 2 X 200/i. 



TABLE 23 



Shotting linear measurements of blood vessels in n in different parts of the central 

 nervous system Standard volume 189/jf X 



AVERAGE PER 

 189M 1 X 200ft 



PROBABLE ERROR 

 OF AVERAGE 



Fasc. cuneatus* 1318 



Ventral funiculus 1413 



Lateral funiculus 1593 



Pyramidal tract 2501 



Fasc. long, dors 3041 



Subst. gelat. Rolandi 4159 



Nuc. mot. VII 5230 



Nuc. XII 5732 



Nuc. mot. V 5837 



Ventral horn; cord 6430 



Spinal V nucleus 6592 



Deiters' nucleus 6677 



Molecular layer; cerebellumf 7116 



Dorsal horn ; cord 7203 



Inferior olive 7693 



Superior olive 8008 



Chief sens. V nucleus 8072 



Granule layer; cerebellumf 8762 



Nuc. dentatus 9089 



Chief vestib. nucleus 9742 



Dors, cochlear nucleus. . 10523 



per cent 



3.2 

 2.1 

 2.6 

 2.5 

 3.2 



5.4 

 3.2 

 3.5 

 2.9 

 2.7 



3.8 

 2.9 

 2.9 

 2.6 

 3.6 

 4.0 

 2.3 

 2.3 

 2.7 

 2.8 

 3.0 



* All the measurements for parts in the spinal cord were made in the third 

 cervical segment. 



t The measurements were made in the posteroventral region of the vermis 

 (uvula). 



As these data show, the white substance is less vascular than 

 the gray and the efferent (motor) gray less vascular than the 

 afferent (sensory) gray. 



The vascular supply of the cerebral cortex and its several 

 layers have also been determined by Craigie ('21), at five lo- 



