In Kagawa Prefecture, rivers are so few and water generally so scarce that the bulk of the water for irrigation is supplied by artificial ponds, namely, irrigation ponds, of which there are at present more than 17000 forming, it is said, 6.3 percent of the total ricefield area. As a result, this province greatly suffers from drought from time to time.
The drought of 1934 was a record-breaker, so the writer made a study of the following subjects relating to dry-weather and its consequent damage.
(a) Geographical distribution of regions of good and bad harvest.
(b) The correlation coefficients between the elements of climate and harvest.
(c) The relation between rain-fall and harvest.
(d) A chronological list of droughts and thier periodicity.
(e) Lastly, as already mentioned, because this province has suffered from drought since olden times, there are many temples, shrines, and other historical relics connected with the supplications for rain, besides numerous legends, etc., which the writer gathered from various literatures, supple mented by detailed descriptions of the irrigation disputes, the condition of the ponds, etc. in 1934.

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Concerning the glacial topography of Korea, no accurate knowle, dge was hitherto available, excepting Supan's doubtful accounts.
Having been informed by Prof. Takenaka, a well-known alpinist in Korea, of the presence of such a topography in the KanbO mountains, I wade a trip to that country in the summer of 1936 to search for traces of former glaciation in the north-eastern part of the said coun-try, and obtained the following information regarding the mountains of Kanbo, Hakuto, and Minami-hotai:
1. Kanbo mountains.
In this mountain range, situated in the north-eastern edge of the Kaima plateau, in a NNE-SSW direction for a distance of nearly 60km, its highest peak is Kambo-ho, which is 2541m high. Tt, e mountains are chiefly composed of granite-gneiss, and the wide surfaces of small relief on the summit at altitudes of 2300-2400 are believed to be the remnants of an upwarped peneplain. As far as my observations go, of the cirqes, which are the most striking topography of that kind, there are fourteen in all, being markedly developed on the eastern and northern faces of the mountains. Of cirques, the most prominent are those on the eastern side of the ridge stretching from Kitasetsurei (2442m) via Kodaiho (2471m) to Nishikanbo (2432m). They are large, being 700m wide and over 800m long. The cirque walls are very high, . those that exceed 200m having steep inclinations, in strong contrast to the upper edges of the wide level ridges.
The three cirques that are developed on the northern side of Kitasetsurei are almost as large as those just mentioned, although their inclinations are not so steep. The bottoms of all the cirques are filled with large quantities of morainic blocks, gravels, and sands. Some of the morainic hills exceed 30m in height. The morains that consist of granite-gneiss are irregular in shape and rugged on their surfaces, whereas those composed of hard sandstone are typically subangular in shape, well-facetted and distinctly striated. The floors of the cirques are from about 1900 to 2150m above sea-level, but whether they correspond to the height of the snow-line or not is unknown at present.
Besides the cirques, a glacial trough, which originated from a cirque situated north of Nishi-Kanbo, descends in a NNE direction for a distance of 3km to about an altitude of 1500m. This is confluenced by the three tributaries of shorter glacial troughs continuing from the cirques developed on the eastern face of a ridge that stretches from Kitasetsurei to Nishi-Kanbo. The cirques are prominently distributed on the eastern side of the ridges, with but a few on the northern, and none on the western and southern ridges, which f act clearly suggests influence of the westerly winter monsoons. Because of the comparatively slight weathering during post-glacial time, the glacial topography is well preserved in most all the ridges, but the cirques on the eastern chain, running between Kitakanbo and Minami-kanbo, seem to have been destroyed by the active headward erosion of the downstream.
II. Mount Hakuto.
Mount Hakuto, situated on the frontier between Manchouko and Korea, is the main peak of the Hakuto volcanic chain. Its highest summit, Taishoho, attains to a height of 2750m above sea-level. Geologically, Mount Hakuto is a composite volcanoes of tholoide, built up of various alkaline rocks of tra chytic type that erupted during the end of the Tertiary.
After the formation of the caldera lake Tenchi (about 4km in longer diameter), basic lava flowed out in the vicinity during the Quarternary period, burying Mount Hakuto on its flank, the summit alone being free from repeated accumulations of the lava flows. The explosions that occurred quite recently have made the topographical microf arms quite indistinct as the result of thick accumulations of pumice exceeding 10m in thickness. The inner side of the caldera wall of Mt.

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