The artificial spinal injury was produced on the adult dog by bruishing the spinal cord with a falling iron plate or subdural insertion of laminaria. The injured part of spinal cord was confirmed through the autopsy, then the degeneration of nerve fibers in the root of spinal nerve and peripheral part was examined. The results obtained were as follows:
1. When the spinal cord was bruished by a falling iron plate, extensive strangulating depression and edema were observed around the injured part in all cases. Following the laminaria insertion, the dorsal one-thirds of the spinal cord were decayed into yellowish-brown creamy mass, however, the root of spinal nerve remained almost normal in all cases.
2. Degeneration of nerve fibers in the root of spinal nerve were found between upper 1 to lower 1-2 segments around the nerve root of spinal cord when injured by a falling iron plate, while it was found between upper 1 to lower 2 segments around the root of spinal cord when injured by the insertion of laminaria. Namely, followin the artificial spinal injury we performed, degeneration of myelinated nerve fibers in the root of spinal nerve were extended between 3-4 segments of the spinal cord.
3. In the ventral root of the spinal nerve, 10-519 of degenerated fibers were found in the case with a falling iron plate, while, 481-503 in the case of laminaria insertion into the lumbar segment, and 797 in the case of laminaria into sacral part. In these cases, eac of the small-sized, medium-siz-ed, large-sized, and maximum-sized degenerated fibers were observed, respectively.
4. In the dorsal root, 2 of degenerated fibers in a case with a falling iron plate, and 17 in a case of laminaria insertion were found, and these were assumed as a efferent fibers originated from the spinal cord.
5. 5-47 of degenerated fibers in the hypogastric nerve, 76 in the pelvic nerve, and 35 in the vesical nerve were found, and these were recognized as the small-sized and/or the medium-sized.

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Half-side section of the spinal cord in lumbar or sacral segment, and one-side section of anterior or posterior horn of sacral segment were performed respectively on the adult dog, and the degenera-tion of nerve fibers in the spinal cord were examined on the continuous specimen with Marchi's staining. The results obtined were as follows:
1. It was ascertained through autopsy that each section showed well coincidence as that expected. The injured range of the spinal cord around the part of section were about 3800-8600μ in the case with left half-side section of lumbar segment, 2000-3600μ with left half-side section of sacral segment, and 1200-3200μ with one-side section of anterior or posterior horn of sacral segment, respectively.
2. Ascending or descending degeneration of nerve fibers around the injured part of the spinal cor, which had same concept as to the ascending or descending tract, were pursuited.
There could not be found any specific aspect on the descending degeneration in the case of half-side section of lumbar segment.
Concerning to the ascending degeneration, there could be found many degenerated fibers in the fasciculus aneatus of the lower part of 7th lumbar segment, and furthermore, somewhat localized degenerated fibers in the center part of the dorsal tract of upper part of 7th lumbar segment were found, However, there could not be found the degenerated fibers like this in the range of further upper part of 6th lumbar segment. On the other hand, similar aspects of degeneration were observed after the one-side section of posterior horn of sacral segment.

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Selective section of lumbar or sacral segment of the spinal cord, which is thought to be the spinal center of autonomic nerves innervated to the urinary bladder, were performed on the adult dog. And the degeneration of myelinated nerven fibers in the ventral or dorsal root of 13th thoracic-4th lumbar nerves, in the minor or inferior splanchnic nerves, and in the hypogastric or vesical nerves were examined after the section of lumbar segment, while the degeneration after the section of sacral segment were observed in the ventral or dorsal root of lst-4th sacral nerves, and in the pelvic or vesical nerves, respectively. The results obtained were as follows:
1. When the half-side section of lumbar segment was performed, the degeneration of nerve fibers in the spinal nerve root were found between upper 1 to lower 1-2 segments, 3-4 segments in total, around the injured part, while it was observed in the range of 2-4 upper segments after the half-side section of sacral segment.
2. In the ventral root, 92-135 of degenerated fibers in the case of half-side section of lumbar segment, 87-434 in the case of half-side section of sacral segment, and 169-248 in the case of oneside section of anterior horn of sacral segment were observed, respectively. These were mainly consisted from the small-sixed and medium-sized nerve fibers.
3. In the dorsal root, 1-74 of degenerated fibers in the case of half-side section of lumbar segment, 7-9 in the case of half-side section of sacral segment, and 4-6 in the case of one-side section of posterior horn of sacral segment were observed, respectively. And these fibers were assumed as the efferent fibers.
4. The invasion ratio of degenerated fibers which were found in the spinal nerve root and introduced into the peripheral nerves were examined. The invasion ratio against the minor or inferior splanchnic nerve were 47.1-97.1% in the small-sized, and 14.5-63.2% in the medium-sized fibers. The invasion ratio against the pelvic nerve were 6.3-97.6% in small-sized, and 12.5-91.5% in the medium-sized fibers. And furthermore, the invasion ratio of the degenerated fibers in the hypogastric nerve into the vesical nerve were 0-13.6% in the small-sized, and 0-13.6% in the mechum-sized fibers, while the ratio between pelvic nerve and vesical nerve were 32.4-100% in the small-sized, and 0-66.7% in the medium-sized fibers.
From the results obtained, it was clarified that the most part of the degenerated fibers found in the spinal nerve root were introduced into the minor or inferior splanchnic nerve and pelvic nerve, and furthermore, the major part of the degenerated fibers in the minor or inferior splanchnic nerves were introduced into the hypogastric nerve, while the greater part of the degenerated fibers in the pelvic nerve were transfered into the vesical nerve, respectively.

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Einführung in die neulich erfahrenen 2 Fälle von Doppelkrebs:
a) Basaliom an Nasenflügel mit an dem Penis stattgefundenem Stachelzellenkarzinoma. b) Sogenanntes “clear cell”-karzinom an der rechten Niere mit Zylinderepithelkrebs des Magens.
Statististischen Zusammenfassung der in den Literaturen Japans geschriebenen, 368 bösartigen Doppeltumorfällen.

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