1. In a previous paper, the writer discussed statistically the emigration regions in SHIKOKU and determined the factors causing emigration from each regions. The geographical factors in any region should not be consi-dered individually, but as a whole; from the geographical point of view, they must be attributed to the structure of the regions be thought of in combination.
The writer, as in the SHIKOKTJ, study listed (1) the ratio of farm, (2) that of subsidiary farmers and (3) that of small farmers as facors of emigration And tried to determine relationshipt between the factors.
2. In this paper KANTO cosznprises, six prefectures of the KANTO District and four prefectures in SOUTHERN CHUBU, (Shizuoka, Aichi, Mie and Wakayama). The latter two generally belong to the KINKI District, but are included because of their similarity to the other two io several aspects.
3. At first, simple correlation coefficients between the ratio of the emi-grants to all farmers and to each of the three factors were calculated. The correlation of the farm is very low, therefore it cannot be considered as a cause of emigration. In regard to Vie otter two, their correlations are all lineal (Table 1.) and the test by correlation covariance demonstrates that -the regression coefficients bi in the equation Y=b₀+biXi are all significant.
4. The multiple correlation coefficients between Y and X₁, X₂ and the multiple regression equation were determined as follows: ry.X1X2=0.62 in KANTO ry.XlX=0.74 in CHUBU _??_ The estimated values of the emigrants by the eq uation almost coincide with their actual values (Fig. 1, 2, 3, 4.), therefore, by the test of the partialre gression coefficients, the causes of emigration can be determined in each region.

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In this essay the author presents certain characteristics of migrations caused by marriage in 6 towns and 10 villages located on the southern side of the Sanuki Range in Tokushima Prefecture in 1949. These characteristics are
(1) Emigrants were more numerous than immigrants while movements within the village were the lowest in number.
(2) Women constitute the chief factor in migrations.
(3) Migrations within the village were more often seen in wider villages and in those lying in the western mountains.
(4) Migrations within the native prefecture were far more numerous than migrations to and from other prefectures. Migrations most often took place within a radius of about 5 kin around the village. “Shukkonken, ” the sphere into. which the emigrants move after marriage, was generally identified with “Nyukonken, ” the sphere in which the emigrants due to marriage originate, however, the range of the former group was more extensive in the east while that of the latter was wider in the west. In summary, “Tsukonken, ” the sphere of intermarriage, consisted of proximate districts and its area was somewhat greater in the west.
(5) Concerning intermigration with other prefectures, emigrants were .more numerous than emigrants; “Idoken, ” the sphere of intermigration, was formed by neighbouring prefectures and cities. However, if migrations in name or domicile only are disregarded, near by prefectures formed the “Shukkonken” and remote prefectures “Nyukonken.” In most cases, the direction of migration, tend northward.
(6) In terms of the percentage of the population involved, migration took place most frequently in native villages, next in the native prefecture, and the least in other prefectures.
(7) Men migrate within a smaller sphere than did Momen.
(8) The age of the migrants varied widely; 22 years occured most frequ-ently, but, in the case of men, it was at a slightly older age with less variation by age. In those villages in the western section, it appeared that younger persons were more numerous than older ones.
(9) The registered dates of migration ranged widely with a peak in 1948, (one year before) and only few cases going back over 5 years. In the case of men, divorced persons, and those in small villages, it is rather rare to find postponements in registering migration. With respect to the months, of migration, statistical curves show 3 peaks and 3 depressions ; the migra-tions took place mainly in winter and spring and were most infrequent in, summer and autumn with the exception of those migrations caused bydivorce.

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The bicycle plays as important a role as a means of communication in Japan as the motor-car does in the United States. The author investigated bicycle traffic in the Kujûkuri Plain of Chiba Prefecture in 1952 and arrived at the following conclusions:
(1) The ratio of bicycles to the population of a town or village is propo-rtionate to the community's distance from the nearest railway station. (Fig. 1)
(2) The sphere of influence of railway stations from which people com-mute to their offices by bicycles are shown in Fig. 2; their radii are found to be about 10 kilometers.
(3) A map of distribution of residences of the students of Chosei High School in Mobara City is shown, in Fig. 3. From this map the limit of attendance by bicycle can be determined; the largest radius is 12 kilometers.
(4) Market areas of fresh fish pedlers utilizing bicycles and starting from fishing villages along the Kujukuri beach are shown in Fig. 4. The maximum radius is 30 kilometers; the average radius is 20 kilometers.
(5) In Fig. 6 the four (C, D, E1 and E2) bicycle traffic circles are, centered on AIobara City. The 6 circles obtained by adding two other circles (see Tab. 1) to the above four may be termed the circular structure of bicycle traffic of Mobara City.

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The writers carried out certain investigations in order to estimate the amount of groundwater discharge through the Watarase River valley near Kiriu City in Gumma Prefecture.
They surveyed the geology of the flood plain by means of electric resisti-vity methods using apparatus of the Electro-Technical Laboratory type and check the results by test borings (Fig. 1).
The Watarase River valley is underlain by Tertiary formations and dilu-vial and alluvial deposits. The alluvial deposit, with a maximum depth of 20 meters. is divided into an upper and a lower layer. The upper layer, composed of loose sand and gravel, is the most productive aquifer; the -diluvial deposit has some confining aquifers.
From the groundwater contour map (Fig. 1), obtained from observation of 30 wells, it was found that groundwater generally furnishes the river water throughout the valley, but locally influent seepages occur in some places.
The writers calculated the gradient of the groundwater flow and evaluated -the permeability coefficient by Tienis' method as modified by Muskat.
Using the data arrived at by the above methods, they calculated the amount of groundwater discharge through a valley section at 1.25³m)sec.

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