In Miyagi Prefecture, administrative regions were classifiable into three groups according to the relative proportion of workers engaging in agriculture, fishery or forestry in the total economically active population (SUZUKI and MATSUYAMA, 1974). The different pattern on some indices of population structure and growth including fertility, population decrease, and ratio of population aged 65 and over to that aged 0-14 years old was observed in fishery zone by comparing with other areas. All these phenomena implied that young adults in fishery zone had different attitudes to migration from that of other area where agriculture is the most prevailing industry in the area. Because no available data on age-specific numbers of migrants was in the official mobility statistics, we devised the fluctuation ratio of regional population for analysis of the mobility. The term ; fluctuation ratio was def ind as a notation : Px/Px+5 (Px: Number of regional population of x years old in 1965 census, Px+5 : Number of x+5 years old population in 1970 census in the same region). Since this fluctuation ratio changed by death and migration, age-specific death rates from 10 to 19 years of age tested, because the person of this age-group was exposed to migration to the greatest extent, but no correlation was found between death rates and rates of population in primary industries to total. Young adults of this age group were less migratory in fishery zone than in other area in both sexes. This was likely to be resulted from the difference of the demand for young labor force in each area, and this might also bring about disparity of family sizes. By the census of fishermen and cultivators, the size was the greatest in the household engaging mostly in aquiculture of sea-weeds and shellfish, the second greatest in the household of agriculture, and the smallest in the household of non-tidal fishery. Thus, the requirement of young labor force was considered to differ even in the household of fishery, and by that reason, it is necessary to further elucidate the difference in fertility and migration depending upon various types of fishery.
This is a report of the development and results of a certain health method which was applied to the myasthenia gravis patients (one male and five females) excluding two patients (one male and one female) of whom we have already given an account. They stayed in the Health Recovery and Promoting Center at Yao from February 1, 1974, to the end of the same year, and practised the health-recovery-and promoting method of fasting, eating unpolished rice, and having a cold-and-hot-bath taken one minute alternatively. Out of six patients, five (one male and four females) except one (Case 1 : female) gradually began to take a turn for the better in such symptoms as lowering eyelids, double vision, and the sense of desertion of power from the whole body, and fairly good results were gained. However, in Case 1, neither good nor bad development was seen on the whole.
Out of the myasthenia gravis outpatients who came to the Yao Health Recovery and Promoting Center at Yao between April, 1973 and the end of December, 1974, and received the guidance how to follow the health-recovery-and-promoting method of fasting, eating unpolished rice, having a cold-and-hot-bath taken one minute alternatively, etc., and who practised the method at home, six patients (two males and four females) who still come to the Center and try the method as of May 1, 1975, have been examined as to the progress of changes in the symptoms through the application of the method. It has been found that the two male patients have made an extremely good progress. The condition of ocular, bullar and generalized symptoms improved gradually, and most of the symptoms have disappeared in a year. Of course the patients have stopped taking medicine internally, but nothing has happened from it. Moreover one of the two patients has returned to his place of work and is on the same duty as a healthy person. Two out of the four female patients are progressing comparatively well, and we have made sure that their subjective symptoms which were seen at the first medical examination have been alleviated in some degree. In the case of the remaining two female patients (Case 1, and Case 3) no remarkable result is obtained. Only a small amount of the main complaint that they had at the first medical examination has been removed. Yet we are glad to say that there are none among the six patients that have become in the symptoms.
A SMON patient who was admitted into the Yao Health-Recovery-and-Promoting Center at Yao on May 29, 1973 and followed the health-recovery-and-promoting method of fasting, eating unpolished rice and having a cold-and-hot bath taken one minute alternatively, etc. has got remarkable inprovement of such symptoms as the palsy of the planter region, extraodinary fatigue in the lower legs, bellyache, and a dull feeling in the stomach. Then, all the symptoms were disappeared in a comparatively short time. The condition of knee jerk and achilles jerk which was getting worse at the time they first came to the Center has improved.