1) How much the cooling by rain influences on the heat-budget at the ground surface is studied comparing with other terms of heat-budget equation. And then the heat-budget during rainfall is compared with those during other weather conditions.
As the result, it is made clear that during rainfall the latent heat is larger and the sensible heat is smaller. “Cooling” by rain is only a few to ten or so percentages of the net radiation but forty to fifty percentages of the heat-exchange into soil.
2) From the climatological view-point, the regional and seasonal variations are examined by considering the relation of precipitation to air temperature, which is found to be proportional to the temperature difference between surface and wet bulb (rain water). It seems that “cooling effect” is larger at the season or in the region of hot and rainy climate.
The author wishes to express his sincere thanks to Dr. E. Fukui, Honorary Professor of Tôkyô Kyôiku University for his constant guidance and encouragement for the completion of this paper. And the author wishes to dedicate this paper to Dr. Fukui in commemoration of his retirement from Tokyo Kyoiku University.

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An attempt was wade to clarify the synoptic and local climatological features of Bora in Yugoslavia. First macro-climatological conditions of Bora regions together with the other strong local winds in winter in the Northern Hemisphere were considered in relation to the surface and the 500-mb level pressure patterns. The result revealed that they situate at the margin of the Eurasian high at the surface level or under the climatic troughs at the 500-mb level in winter, where cold air advection or cold air outflows tend to occur.
Then, statistical aspects of Bora were summarized as follows: 1) Reaching higher (over 15 m/s) wind velocity, they occur frequently in winter. 2) Air temperature is lower than 0°C in January and February. 3) Relative humidity is lower than 40% in the case of anticyclonic Bora. 4) The stronger Bora blows normally in nighttime and reaches its maximum in the early morning during 5—8 AM. 5) They continue 12—20 hours in most cases. And, 6) In the exceptional cases, Bora prevails longer than 10 days.
The local climatological investigations came to the following conclusion: Sudden, short time temperature rise is seen usually in the beginning of Bora. During the Bora period, relative humidity dropps occasionally very low in association with the anticyclonic situation. The stronger Bora prevails in the areas around Ajdov_??__??_cina in Slovenia and Trieste, Senj, and Karlobag at the Adriatic sea coast, where the local topographic situations are favorable as one of the causing factors. Distribution of Bora region is presented as shown in Fig. 9.
Finally, schematic cross-section was drawn along a line WSW-ENE passing Senj, where Bara is the strongest at the coast, as given in Fig. 10.

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When a big electric assembly factory is established on the non-assembly industrial region, some small factories, especially related to the big factory, are gradually followed the growth with enlargement of the big factory. The writer pursued here how process of formation of industrial region, formed on the double economic structure of Japan, is.
Three stages for formative process of the regional agglomeration, according the writer's method of division, are following:
1) Priliminary stage: small factories related directly to the big factory, known as complementary and subsidiary factories, are established by the local plants and have get their simple technique. Their agglomeration makes the preliminary type of industrial region. Labor's supply by subcontractor is almost restricted within leaving agrarian labors in the local area.
2) Expanding stage: Secondary industries begin to penetrate the non-assembly industrial area, but most of them are small size and belong to foreign plants. They are expanded their size with agglomeration of the big assembly factory, and lead foreign plants with higher technique. The complementary factories renew their techniques and managements. Agglomeration of their size become more intense. Boundary of labor's supply also expands into the margin of the core area.
3) Complete stage: When the complementary, subsidiary and secondary industries of the big factory agglomerate to some extents, they have to make the regional agglomeration of manufacture which is made from communication with the big factory. Boundary of labor's supply is also conf ind within definitive range.
Generally speaking, the subcontractor of foreign plants with higher technique are later located than the one of local plants with lower technique. The formers are almost intended in industrial estate, and the latters in the core area.

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