OF DENISON UNIVERSITY. 
91 
nucleus alone stains in most instances and this not deeply. A reticu- 
lum within the clear nucleus is brought out, but, as a rule, no distinct 
nucleolus. Where the cell contour is visible it is as described above. 
Such cells are associated with the deeply stained pyramids in such a 
way as preclude the view that the difference could be due to varying 
treatment. 
The distinction once relied on by us, i. e. the direction persued 
by the apical process does not seem constant here. The deeper cells 
have the apical process directed entad while the ectal series may have 
the reverse position. The dorsal portion of the occipital region is oc- 
cupied by these flask cells almost to the exclusion of all others. In 
longitudinal section at the poserior part of the cortex the following ob- 
servations were made. There are here few pyramidal cells and a rel- 
atively large number of pale cells which contain large clear nucleoli 
and chromatin (?) mesh-work. The cell body is frequently so incon- 
spicuous as to make the nuclei appear like free corpuscles. In many 
cases sufficient care will detect the cell outlines and in other spaces in 
the neuroglia testify of their presence. The outline of the cell is rare- 
ly as distinctly pyramidal as in the motor type through peripheral pro- 
cesses in some cases at least pass dorsad. See plate C, Fig. 6, which 
is a drawing of a portion of the occipital region (IV — 7. ) as seen with 
the one-fifth inch objective, m. is one of the pyramids and i". one 
of the supposed sensory cells. The almost constant presence of Deit- 
er’s cells at the base of the pyramids will be npticed. This region 
may be contrasted wit a typical motor area as drawn in Fig, i of the 
same plate or Fig. 2. A mixed afea some distance beneath the ectal 
layer of cortex is drawn in Fig. ii, Plate A. In this case the sensory 
cells are almost unstained except the nucleus. (4 — 14.) In even the 
typical motor regions these pale cells are always present though in less 
numbers and mostly crowded to lower levels. Toward the posterior 
part of the hemispheres the cortex along the middle of the lateral 
aspect differs quite obviously from any other portions. The band is 
rather narrow and consists of small and slender ceils which are in 
many cases pure fusiform elements, others are flask-cells, or rather 
inverted pyramids, but careful examination with one fifteenth inch 
objective (1500 diameters) shows that the process directed proximally 
does not form a single axis cylinder, as appears at first, but dissolves 
into several small fibres. Among these cells are^a few with the usual 
pyramidal structure, | but more slender than usual. Near the white 
