m.n.- 



col.sup. 



Farther ventrally there is an imperfect impregnation of two neurons of the col- 

 liculus inferior, one of which sends dendrites also into the pedunculus cerebri 

 iped.). In the latter region a single neuron of the III nerve is impregnated 

 {nuc.III). On the right side a multipolar neuron (tn.n.) of the stratum album 

 of the tectum is impregnated. X 30 (cvc, 3-4-7). 



Fig. 33 Through the middle of the tectum mesencephali; cf. fig. 12. The 

 dendrite of a neuron of the tectum opticum is impregnated {col. sup.) and also 

 several neurons of the colliculus inferior {col.inf.}. On the left side are seen 

 several multipolar neurons of the stratiun album (m.n.). On the right side is a 

 typical neuron of the motor tegmentum within the pedunculus cerebri. X 30 

 (cvc, 3-5-4). 



Fig. 34 An ependymal element from the caudal part of the tectum mesen- 

 cephah. From a transverse Golgi section. Throughout these Golgi preparations 

 the ependyma can be readily distinguished from the neurons by their delicately 

 plumose appearance. X 74 (cvic, 194). 



323 



