巻号一覧
10 巻, 4 号
選択された号の論文の9件中1～9を表示しています
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Yuzo TOHYAMA, Sogo TETSUMOTO, Saburo FUKUYA, Shuzo YAMADA1941 年 10 巻 4 号 p. 153-155
発行日: 1941/11/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (202K) -
荻野 珍吉1941 年 10 巻 4 号 p. 156-158
発行日: 1941/11/25
公開日: 2008/02/29
ジャーナル フリー海藻のエキス成分、殊に有機鹽基に就ては比較的研究が尠く、KLEBAHN, HAAS 及び HILL, KAPELLER-ADLER 及び CSATO が Methylamin の存在を.戸田が Porphyra laciniata にて Stachydrin の存在を、ZELLER が10種の海藻に就いて Cholin の存在を見てゐるに過ぎない (1)。余は海藻の化學的研究に從事し、昆布其他數種の海藻の鹽基に關し研究を行ひたるにより茲に報告する次第である。抄録全体を表示PDF形式でダウンロード (224K) -
野口 榮三郎1941 年 10 巻 4 号 p. 159-160
発行日: 1941/11/25
公開日: 2008/02/29
ジャーナル フリー從來海豚に對する研究は少く、僅かに分類學的研究が二,三あるに過ぎない。著者は海豚の肉及び皮革の利用研究を行ふに當り、その體長、體重、精肉量、生皮重量、内臓量を測定したのでその結果を茲に報告する。本調査に當り多大の御指導と御援助を賜つた兵庫縣水産試驗場長農學博士松井佳一氏、内橋潔氏竝に測定計算の一部を擔當せられた宮崎鹿太郎氏及び友田武男氏に深謝の意を表す。抄録全体を表示PDF形式でダウンロード (77K) -
柳川 鐵之助1941 年 10 巻 4 号 p. 161-162
発行日: 1941/11/25
公開日: 2008/02/29
ジャーナル フリー著者(1)は曩に各種紅藻類より 70%, 50%, 30% の各濃度のアルコール及び熱湯を以て逐次煮沸抽出を行ひ夫々の抽出液から分別抽出粘液質を分離したがその各に就て水溶液の還元性を測定せる際遊離ヨードに依り肉眼的に判別し得る3種の呈色反應がある事を知り而かもそれが凝固力と關聯のある事を発見した。故に之に就て報告し参考に供せんとするものである。抄録全体を表示PDF形式でダウンロード (101K) -
柳川 鐵之助1941 年 10 巻 4 号 p. 163-165
発行日: 1941/11/25
公開日: 2008/02/29
ジャーナル フリーIt is studied that all of S contained in gelose is combined as sulphuric acid and there-lation between the amount of SO3 and jellyfying power is discussed.抄録全体を表示PDF形式でダウンロード (182K) -
木下 虎一郎, 澁谷 三五郎1941 年 10 巻 4 号 p. 166-170
発行日: 1941/11/25
公開日: 2008/02/29
ジャーナル フリーIn order to determine the spawning period of Cucumaria japonica SEMPER we examined the gonads of the samples, which were obtained from Muroran between November, 1939 and November, 1940.
In this species the gonadial tubes are found clearly all the year round and do not much wither even in the non-spawning period. The tubes are found more or less to contain ripe sexual cells nearly all the year round. Both sperm and egg are relatively large, viz., the length of the ripe egg is 540μ. and its breadth, 474μ, and the sperm has a whole length of about 67μ.
Spawning of this species extends over a considerably long period, from early March to middle November, with a maximum from early or middle July to late September. During the maximum spawing period proliferation of sexual cells are very active as well as extrusion of ripe ones.抄録全体を表示PDF形式でダウンロード (430K) -
大島 泰雄, 中村 中六1941 年 10 巻 4 号 p. 171-176
発行日: 1941/11/25
公開日: 2008/02/29
ジャーナル フリーAs far as we are aware, none ever described in detail the life-history of fish belonging to Scleroderm in Japan, while the, present fish, one of Scleroderm, is a common commercial as well as game fish in Ise and Mikawa Bay. The present study is summerized as follows :
(1) The breeding season covers the duration from June to August. The number of eggs the female possesses is counted by examination of the ripe gonad. The result is shown in Table 1.
(2) The egg is pelagic. Artificial fertilization is by no means difficult and gives success-ful result. The larvae and the youngs are described and figured (Text-figures).
(3) The yearling grows up to ca. 10 cm in body-lenght at the fall of the year. From that it is clear that the small size group (9-14 cm) observable in the breeding season belongs to the 2nd year class. The age-determination is also made by the study of the vertebral bones. The growth rate is shown in Table 5.
(4) The male ripens in smaller size than the female. The biological minimum is 12cm in the male, while it is 15cm in the female, and the former belongs to 2nd year class and the latter to 3rd year class.抄録全体を表示PDF形式でダウンロード (420K) -
新崎 盛敏1941 年 10 巻 4 号 p. 177-184
発行日: 1941/11/25
公開日: 2008/02/29
ジャーナル フリーThe life-history of Tinocladia crassa (OKAM.) KYLIN was studied. In Ise- and Mikawa- bay, the alga is found from February till the end of June, and it has only unilocular sporangia in April, May and June. After liberating swarm•spores (zoospores) from the unilocular sporangia, it begins to decay and then disappears. Thereafter no macroscopic plant-body is seen in nature till the next spring, when the young plantlets appear.
In the laboratory, swarm-spores (zoospores) from the unilocular sporangia develop in direct germination without conjugation and make the microscopic protonemal germlings (stre-blonemoid devolopment). When the environmental condition is good, they grow well, but when the weather becomes warmer, some cells of this protonema (germling) are covered with a thick membrane, and their contents become granular. During the summer-time, they cease their further growth and rest in this stage till the better condition comes in, when a slender minute protonemal gametophyte sprouts out from each of these resting cells. In maturity, the game-tophyte bears many multilocular sporangia, and in each of the sporangia 4-6 gametes are finally made. After escaping from the sporangium gametes swim about and they are able to conjugate. Yet, most of them not having conjugated can germinate apogamously. On the other hand, the zygote germinates directly and grows in an Anlage of the Tinocladia plant, i. e., the sporophyte. The apogamously germinated gamete develops into a slender microscopical germling which, afterwards, bears again multilocular sporangia in spite of unilocular sporangia. These results were observed by the culture experiments for about an year (from 1940, April till 1941, April).
After these observations, it seems to be reasonable that, in nature, the Tinocladia plant aestivates in the stage of the thick-walled resting cells.抄録全体を表示PDF形式でダウンロード (837K) -
高倉 輝男1941 年 10 巻 4 号 p. 185-189
発行日: 1941/11/25
公開日: 2008/02/29
ジャーナル フリーPDF形式でダウンロード (347K)
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