In order to confirm the localization of intracranial foreign bodies from headinjuries, and to examine the relations between the localization of intracranial foreign bodies and clinical symptoms, findings of E. E. G, etc., the author investigated the precise localization of intracranial foreign bodies, and reached a conclusion that tomography is the most useful one for the purpose. He examined the simplicity, reliability, possibility of description, and application of the method of tomography, which will describe foreign bodies on the plane coordinates, and will locate them by the angle and distance from certain point.
In the diagnosis or operation of cases with intracranial foreign bodies, form and situation of the foreign bodies in the space should be preliminarily presumed by means of stereophotography, and if possible, their size and distance should be measured. Then the tomography is conducted and it will show us the intracranial foreign body and the suggested point of surgical invasion, if it is necessary.
The preparatory measurement, and the methods and techniques of tomographing were thoroughly examined and the measurable and fixative apparatus of cranial tomographing were designed.
In future, the advance in tomographing methods and techniques will enlarge the power of cranial tomography, and will enable us to investigate directly tumors, transformations of ventricles of brain, etc., beyond the concurrent conjecturing indirectly intracranial changes by the anatomical research of cranial forms or the ventricles of the brain.

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The present paper deals with the changes of the quality of the mineral spring by year. According to some reports, the qualities of Barden-Baden spring, Karlsbad spring and Kitchingen spring did not change even for 100 years. In Japan, the Ikaho hot spring showed in its ion contents by 30 years. Dr. Fresenius investigated the quality of Viesbad spring in 1849 and with the same method 36 years thereafter and revealed no change at all, as he reported. The present author analysed the Yuda spring in 1941 and followed up its changes for 15 years. The results obtained are as follows:
1) Yuda spring consists of two types of spring; the simple spring and the H₂S spring. The one is found in the upper part of the stream, while the other in the lower part of the stream. The central spa of the Yuda is the upper part of the stream.
2) Since 1932, temperature of the spring began to fall gradually and was at the lowest in 1949, henceafter it tended to rise again.
3) The changes in temperature were found to be due to some artificial causes.
4) The changes of Cl, H₂S and pH were not found during the period of 15 years.
5) There was little change in special biochemistric virtures of the Yuda spring.

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Migration velocity of leucocites was measured on 58 pulmonary tuberculosis cases. The results obtained are as follows:
1) The average migration velocity of the leucocytes of healthy adults was 34.52μ/sec. There was no appreciable difference by sex.
2) Minimal pulmonary tuberculosis cases showed similar migration velocity of their leucocytes to the normal. Slight decrease of the migration velocity in the moderately advanced cases and marked decrease in far advanced cases were found.
3) The decrease of the migration velocity was marked in such cases whose x-ray findings consisted in exsudative lesions and whose erythrocyte sedimentation rate was accelerated.
4) No apparent relation was observed between the migration velocity and while cell counts in peripheral blood. However, the less the percentage of lymphocytes and the more that of neutrophile leucocytes, the more marked was the decrease of migration velocity.
5) Symptoms of most cases, that had shown normal or slightly decreased migration velocity, almost unchanged or improved in about 1 and a half year thereafter. All cases whose symptoms worsened or who died had shown decreased migration velocity.
6) Follow-up investigations revealed that the migration velocity remained at low level in the cases whose symptoms worsened or unchanged, while it increased in those whose symptoms improved.
Of course, there was a close parallelism between the migration velocity and the clinical pictures. It fluctuated in parallel with the vicissitudes of tuberculous lesions.

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In the same cases as in the former report, further observations were conducted upon progressive alterations of bone and muscle electrolytes' contents and serum concentration during the stress of operative procedures, and the various factors responsible for the findings were studied. The results are summarized in the following:
1) In comparison to the preoperative value, the serum sodium and chloride concentrations decreased by the end of surgical operation.
2) The sodium content of rib bones did not reveal any alteration in the beginning or the end of operative invasion.
3) Compared to the preoperative findings, the muscles injured by operation showed a marked decrease in potassium content but a marked increase in sodium in the late period of surgical invasion.

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The following is the results of observation on the ions' variation in serum and urine consequent to surgical operation for pulmonary tuberculosis. 1) Both Na and Cl in serum and urine began to decrease on the 2nd day after operation, and tended to recover on the 7th day. This seems due to the decrease in the whole amount of electrolytes due to impossibility of taking food immediately after operation, as well as to the fact that Na and Cl are originally stored in muscles and other tissues injured by operation.
2) Amount of K in serum did not undergo any practical change, however, that of in urine began to increase after operation, and returned to its former value on the 7th day. This seems due to the temporary starvation immediately after operation, because this variation is similar to that of K due to dystrophy. Since a remarkable shrinking of adrenal will be observed in case of dystrophy, those variation of K seems to definitely suggest the temporary adrenal dysfunction of K seems to definitely suggest the temporary adrenal dysfunction.
3) Ca in serum increased generally after operation, and recovered on the 7th day. This is similar to dystrophy. One of the causes for this may be the dysfunction of tissue to settle Ca into itself, due to the dysfunction of autonomic nervous system.
4) Between the cases whose breathing capacity decreased remarkably after operation and the cases in which the same decrease was not so remarkable, no difference in the variation of electrolytes was noticed.
5) Influences on the variation of electrolytes were hardly effected by the decline in the pulmonary breathing capacity, but they are effected by bleeding, loss of tissue fluid, operative invasion, quality of diet, and perhaps by the effects upon the adrenal function mentioned in the above.

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