The characteristics of thrusts in an east-west direction and the interesting wedge-shaped structure made by the other system of faults are described at some length., Ths faults run in directions slightly west of north and slightly easb of north., According to the writer's opinion the Togano area is a tectonic basin., Four sedimentary facies are distinguishable in the Torinosu series distributed in zones in the Sakawa basin and they are termed the Kaisekiyama, Nagatake, Togano and Aso facies from north to soutn., Precise description of the stratigraphical succssion of the series and variation among these facies is given in the Japanese text., As a result of this study the Torinosu series and its stratigraphic relation to the Ryoseki series is shown in detail., The Naradani formation proposed here is a fossil bed discovered by this study, which is overlain by Torinosu series disconformably., The fossils contained show the Middle Jurassic age of the formation.,

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The Hydrozoan coral, Circoporella semiclathrata HAYASAKA is a rather rare, yet very characteristic fossil in the Torinosu limestone developed in the Outer zone of South-West Japan, and in the Kwanto and Abukuma Mountainlands of North-East Japan., Very recently it was unexpectedly discovered in a dark gray limestone intercalated in a complex chiefly of schistose schalstein exposed at the east bank of the Saru-gawa, about 1., 7 km east of Sinnito Mine in Horosari-mura, Saru-gun, Hokkaido., Although only a fragmental one, the present material exhibits features characteristic of the coenosteum of Circoporella semiclathrata as described by HAYASAKA ; it occurred at the locality cited in association with such fossils as Nerinea (ss., ), Thamnastrea and other hexacorals., As fully stated in the Japanese text, this species is an important key-fossil of the Upper Jurassic not only in Japan, but also in abroad., Circoporella is very similar to Sphaeractinia in having the coenosteum composed of concentric lamellae and vertical elements, the concentric lamellae being apparently two layered under high magnification, a thin film-like layer limiting the upper surface of a thick inner lying homogeneous substance, and having astorhizae though rarely., This genus was sometimes confounded with Burgundia MUNIER-CHALMAS, a stromatoporoid closely allied to Clathrodictyon and which possess coenosteum composed of trabeculae in vertical and horizontal sets, which are homogeneous in microstructure under high magnification ; further astorhizae are lacking to it and zooidal tubes are present., In the renewed examination, the writers are now confident in regarding Burgundia and Circoporella to be generically independent on account of the differences mentioned above, and the species of Burgundia of European writer (Burgundia cf., semiclathrata HAYASAKA from the Astartian of Villereversure, Ain, France) to be true Circoporella and not Burgundia., By way it may be pointed out that the Upper Jurassic marine deposits are divisible into three different types according to lithological and fossil contents, namely : 1) Torinosu type composed of shale and sandstone in alternation with lenses of limestone known under the name Torinosu limestone and often richly coralline, 2) Kitakami type of shale and sandstone and lacking limestone, and 3) Hokkaido type having considerable amount of schalstein with limestone lenses which contains at least Circoporella found in the Torinosu type.,

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滿洲國高等師範學校江口元起教授は本溪湖産の興味ある腕足類の1種を著者等の1人畑井に送附されたが, 同種は明らかに Isogramma屬に入るべきものである。此屬名は1870年MEEK・WORTHEN兩氏に依り提唱され, 從來DITTMAR氏のAulacorhynchusのsynonymと考へられて居たが, Aulacorhynchusなる屬名は既に1834年に於てGOULD氏に依り鳥類の1屬に與へられて居た爲, SCHUCHERT・LE VENE兩氏に依りIsogrammaなる屬名が復活した。然して今日迄に報告せられた種類數は極めて少く, 其等と比較すれば本種は小形なる事其他の相違に依り一見他と區別せらるゝ故, 爰にIsogramma manchoukuoensisと新たに命名した。本屬は從來石炭系及二疊系より報告せられ, 北支那に於て恐らく上部石炭系のものと考へられて居る。本標品は其産出状態より推察して, 野田光雄學士の所謂Penhsi seriesに屬するものと考へられる。

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In this short paper, the writev describes the results of his stratigraphic observations in 1939 in North China., The Eastern Hill of Taiyuan-fu in the Shansi district stratigraphically consists, in descending order, of the redeposited loess, the loess (the Malan stage), the sand and gravel formation (the Sanmenian stage), the purple or reddish chocholate sandstone (the Permo-Triassic), the light brown sandstone, the Neuropteris-bearing shale (the Permo-Carboniferous), the limestone, the Chonetes carbonifera-bearing black shale (Middle Carboniferous), the alternation of black shale and sandstone, the basal conglomerate with iron nodules, and the Cambro-Ordovician limestone., As may be seen from a comparison of the stratigraphic columns established by NORIN and other authors in the Western Hill of Taiyuan-fu and the Shihhotze valley with the writer's, it is likely that some Permian and Carboniferous stratigraphic facies in the former lack in the latter.,

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