Studies upon the Chinese brain. 105 



confluent with the superior precentral. The second frontal fissure is also 

 winding in its course giving off many ramifications, which cause the 

 peculiar multiplicity of small irregular lobes in the anterior frontal 

 convolutions. This fissure is confluent with the precentral. There is 

 no medifrontal fissure present as was the case in brain No. 1 described 

 by Dercum. 



The post central fissure is angular rather than tortuous, it is 

 7 cm. long, and quite deep. This fissure is confluent with the intra 

 parietal fissure, and it also gives off short angular arms which extend 

 into the substance of the ascending parietal convolution. It follows 

 the same direction as that of the fissure of Solando, commencing at 

 a point just above the horizontal and back of the terminal vertical 

 arms of the fissure of Sylvius, and extends within 0,5 cm. of the 

 margin of the great longitudinal fissure. 



The intra parietal fissure is exceedingly long 12 cm. extending 

 from the knee of the ascending parietal convolution across the post 

 central fissure and continuing a tortuous course backwards, upwards, 

 and finally downwards along the occipital lobes and ends in the inferior 

 occipital convolution. There is no transverse occipital sulcus, the latter 

 fourth of this fissure supplanting it. 



The first spheno-temporal, 8,5 cm. in length, begins at a point in 

 the temporo-sphenoidal region just below the origin of the horizontal 

 limb of the fissure of Sylvius. It is quite regular, and extends in an 

 average direction from before backwards, giving off very few lateral 

 branches. One, however, is worthy of special notice, it commences at 

 a point two thirds of the way back and passes upwards into the 

 parietal lobes just back of the termination of the horizontal limb of 

 the fissure of Sylvius. It terminates in a well marked fissure of 

 Wernicke. 



The second spheno-temporal and the two horizontal occipital fis- 

 sures are quite regular and normal as to size and direction. 



The whole external configuration is markedly sui generis, espe- 

 cially are the frontal convolutions very tortuous and small. 



The mesial surface is also quite complex in the arrangement of 

 its sulci and gyri. 



