418 
the well known embryological researches of His, mention is made 
only of bipolar cells or of unipolar cells with T- or Y- shaped pro- 
cesses. The multipolar cells described by Disse (1) were found in 
the spinal ganglia of frogs larvae at a stage when the posterior 
extremities were not as yet developed. Only a few ganglion cells 
with more than two processes were observed. The dentrits of these 
cells could be followed for only a short distance and in only a few 
instances was the branching of these dendrits noticed. He states that 
as his observations pertain to embryos he is not able to state whether 
multipolar cells are found in the spinal ganglia of the frog. LENHOSSEK, 
in a discussion of Dissz’s paper, makes the following comment: “Die 
richtige Auffassung scheint mir die zu sein, daß bei Froschlarven 
vielleicht wegen der Größe und gedrängten Lagerung der Elemente 
an manchen Spinalganglienzellen die ersten Teilungen der beiden Achsen- 
cylinder auf die Zelle selbst gerückt sind, wodurch eine vorüber- 
gehende Vermehrung der Ausläuferzahl veranlaßt wird. Jedenfalls 
handelt es sich bloß um eine embryonale Erscheinung”. In the fol- 
lowing year v. LENHOSSEK, as a result of observations made on embryo 
chicks of the fourteenth day, where he also finds multipolar cells in 
the spinal ganglia, retracts the statements made in the discussion 
above referred to and accepts Dısse’s interpretation as here given. 
The multipolar cells described by v. LENHOSSEK are usually found in 
the proximal portions of the ganglion, near the entrance of the sen- 
sory root. They possess two “nerve-processes” and several quite fine 
protoplasmic processes, which may branch into several secondary 
branches. 
Ramon Y Cayat (3), at about the same time, described similar 
cells, also in the chick. 
In a recent communication SPIRLAS (4) notes the finding of multipolar 
cells in the spinal ganglia of mammalia. These were especially well 
shown in GOLGI preparations made from a goat embryo 9 cm in 
length. At this stage, the majority of the cells were as yet bipolar; 
in some of the cells the processes had approached each other and a 
few unipolar cells were seen. Among the bipolar cells SPiRLAS found 
some with secondary branches. The dentrits seen were described as 
branched or unbranched; their further course could not be ascertained. 
The citations above given pertain to observations made on spinal 
ganglia of vertebrate embryos. DoGIEL (5) has recently shown that 
similar cells are to be found in adult mammalia. They were seen by 
him in methylene-blue preparation of the spinal ganglia of dogs, cats, 
rabbits and Guinea pigs. The cells are described as of irregular, 
