1192 
foetus ( months), a goat and a pig, besides the nervus splanchnicus 
major of a few of these, and in the horse the rammifications of the 
plexus lienalis, the plexus mesentericus cranialis (superior), the nervus 
vertebralis and rami communicantes of thoracal and lumbar regions 
for the presence of microscopic ganglia. 
Nervus Sympathicus, Pars cervicalis. 
Equus. 
The pars cervicalis of the horse 
has been divided every time, between 
the ganglion cervical superius and 
the ganglion cervical inferius, into 
a proximal, middle and distal third 
part; of the other portions, as in the 
other species of animals, portions 
have been treated from between two 
ganglia. All the material has been 
examined according to the Nissi 
method; that of the horses also as 
to the presence of chromaffin cells. 
Yquus. In the proximal third 
part of the cervical sympathicus, I 
found separate ganglion cells, sur- 
rounded by small bundles of nerve 
fibres, frequently close to the peri- 
phery, though sometimes also more 
central, occasionally several con- 
secutive cells, besides one ganglion 
consisting of + 30 cells. In the 
middle portion the cells increase 
in number, sometimes 6 or 8 cells 
can be seen behind each other, 
and again numerous little groups 
of a few eells one behind the 
other, in one case even for a length 
of 1.5 em. In the distal third part, 
beside numerous scattered small 
groups, large cell complexes occur 
(fig. 1). 
a maximum 
The ganglion cells have 
size of 50 u, often 
shapeless or irreguiarly round in 
form with a central nucleus at the 
blunt end. They are surrounded 
by a capsule consisting of flat 
cells. Of the pars thoracalis, I 
