46 Edward F. Malone. 



PLATE III. 



Homo. Series AC (Co.ncluded). 



Magnification of Figs. 8 to 10 = 5 diameters. 

 Magnification of Figs. 8A to lOA = 2 diameters. 



{Cells of tlie nucleus tubero-mammillaris (nucleus mammillo-infun- 

 dibularis). 

 Cells of the nucleus paraventricularis hypothalami. 

 • = Cells of the substantia grisea ventriculi tertii. 

 A = Cells of the nuclei tuberis laterales (n. t. 1.). (Examine with hand 



lens ) . 

 O = Cells of the ganglion opticum basale (g. o. b. ). 



O = Cells of the nucleus ansae peduncularis (ganglion basale of Kolliker). 

 Note that the cells of the nucleus tubero-mammillaris and those of the 

 nucleus paraventricularis are represented by the same type of cell; more- 

 over the same type of cell has been employed to represent the cells of the 

 corpus subthalamicum and those of the nucleus ansae peduncularis. It 

 seems advisable to use one type of cell to represent the cells of two different 

 groups, when these two groups are clearly distinguishable topographically, 

 rather than to multiply the number of symbols used, and thus render it 

 more diflBcult to distinguish between them. The outline drawings will 

 make a confusion of such cell groups impossible. 



