Studies upon the Chinese hrain. 109 



the Intra-parietai. Below it extends downwards as far as the collateral 

 fissure, with which it becomes confluent. 



There is another fissure which starts well up in the quadrate lobe, 

 it extends downwards parallel with the parietooccipital for part of 

 the course, but gradually becoming convergent, it joins that fissure 

 at a point where another fissure from the front meets the parieto- 

 occipital at right angles. This second supernumerary fissure forms a 

 lower boundary for the quadrate lobe, which is also intersected by an 

 arm from tliis fissure at its forked termination. Another, extra, short, 

 and tortuous fissure, coming down from the parietal region, helps to 

 cut up the quadrate lobe considerably. 



The calcarine fissure is normal in size and direction, joining the 

 parietooccipital at an angle of about 50°. The cuneus on this side 

 is perfectly normal, being wedgeshaped, and containing within its boun- 

 daries two or three short deep groves. 



The collateral fissure, 7 cm. long, is regular in its course. The 

 lobulus lingualis and lobulus fusiformis, like their representatives of the 

 other side, are cut up by numerous small but deep sulci. 



The liippocampal sulcus and the fissure of the corpus callosum 

 present nothing abnormal, and the dentate and uncinate gyri are 

 natural in their contour and extent. 



The orbital surface shows a very short sulcus for the lobus olfac- 

 torius, and the marginal convolution is quite narrow. The triradiate 

 fissure is H-shaped, and there are other smaller and insignificant sulci 

 that freely cut up this surface of the frontal lobe. 



From the paucity of material, of course it will be difficult to say, 

 whether the peculiarities observed here are constant or not. Some of 

 them, however, have been observed in the entire series of seven brains, 

 particularly such strong features as the eversion of the orbital and 

 basi-temporal surfaces, the marked vertical fissuration and general 

 confluence of sulci, then the marked separation of the occipital from 

 the parietal lobes, and the curious undulations of the primary fissures 

 in the frontal lobes, together with the zygal arrangement of the 

 triradiate fissure. Also the „vegetative repitition" of Parker must not 



