386 DR. E, KLEIN. 
actual vertical section, or is perhaps merely a diagrammatic 
representation. The section requires to be very oblique, in 
order to show only approximately so many longitudinal 
vessels as are here drawn. No vessel is shown in this 
figure in transverse section, whereas most lymphatics from 
Neumann’s own description follow a horizontal course. 
13. As regards the size of the vessels seen in one vertical 
section we find, as a general rule, that the majority of the 
vessels belonging to the deepest layer of the corium, that is, 
the layer containing the hair-bulbs and sweat glands, are 
larger than those of the middle layer; those of the latter, 
again, smaller than those of the most superficial layer, t.e. of 
the papillary body, bearing in mind that we are here speak- 
ing merely of their relative numerical proportion and of 
preparations whose lymphatics have been distended to a 
medium degree. 
14. The papille, especially were they are well developed, 
as in the fingers, scalp, &c., contain, as already described by 
Neumann, lymphatics either apparently terminating in 
pointed or cecal extremities, or as a single or even double 
loop; and I have seen papille in the finger of a new-born 
child containing complex loops of lymphatics, that is, a 
special network of their own. Sappey mentions a similar 
relation with regard to lymphatics of the papille. In those 
parts of the skin of the new-born that do not contain well- 
developed papille, the lymphatics are indicated by short 
prolongations of the most superficial lymphatics. 
The best view of the lymphatics of the papille is obtained 
iu a thick vertical section. 
15. Making a series of horizontal sections from the papil- 
lary layer down into the adipose tissue, we find 7m each 
section a beautiful and more or less uniform plexus of lym- 
phatics, the vessels varying very much in size. The plexuses 
are of course interrupted by the presence of the hair-follicles 
and glands. Corresponding to the above-named appearances 
in the vertical section, viz. that most lymphatics run a 
course parallel to the surface, we find them in a horizontal 
section chiefly longitudinal ; only few vessels are seen cut 
transversely or obliquely, that is, those running vertically or 
obliquely. In all strata we meet with vessels which appear 
to terminate wm the tissue. Of these are at once to be 
omitted those which on focussing can be seen to be cut 
away obliquely, that is, are running to the next upper or 
lower stratum ; but there always remain a good many vessels 
of which this cannot be said, and which really terminate in 
the tissue; they are generally running out into a narrow 
