巻号一覧
8 巻, 6 号
選択された号の論文の26件中1～26を表示しています
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Naomasa KATAOKA1940 年 8 巻 6 号 p. 267-280
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリー“Ayu, ” Plecoglossus altivelis T. et S. is one of the most delicious foodfish living in the clear rivers of Japan. Therefore, from olden times, the fish has indeed been a cherished dish of the Japanese people. But, as fry naturally hatched in the river always move to the deep sea to pass the winter, their state of living has been entirely unexplained because of the difficulties in the observation of their habits.
Since 1929, the author has continued the experiments for the artificial rearing of the fish in the pond, and finally in 1936, he obtained excellent results that almost equalled the natural breeding of the fish. In view of the remarkable degree of the growth of the fish in the artificial breeding, this report presents and discusses the results obtained during the period of 1936 to 1939.抄録全体を表示PDF形式でダウンロード (4325K) -
Mituyo OKADA1940 年 8 巻 6 号 p. 281-284
発行日: 1940/03/25
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) -
田内 森三郎1940 年 8 巻 6 号 p. 285-286
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーTaking as basis the catch statistics of eels, which have been published by Bureau of Fisheries, Department of Agriculture and Forestry, with the classification according to kinds of the fish for each Japanese rivers, some remarkable relations pertaining to the upstream migration of the fish are studied.抄録全体を表示PDF形式でダウンロード (162K) -
II. 降水量との關係に就て久保 伊津男1940 年 8 巻 6 号 p. 287-291
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーPreviouly(2) three types were recognized in the curves of the yearly catch of the spiny lobster of Japan during the period 1907-'36. The present paper deals with a further analysis of the same data in relation to the prccipitation tabulated in the Climat'c Records of Japan (1907-'28) and the Annual Report of the Central Meteorological Observatory of Japan (1930-'36). Generally speaking, the size of the yearly catch is negatively correlated with the amount of the precipitation, viz., the catch above the average more frequently occur with the prccipitation below its average than above it. As might be expected, no significant correlation was found to exist between the two variables in those prefectures where the yearly catch remains almost constant during this period.抄録全体を表示PDF形式でダウンロード (302K) -
峯 辰三, 家久 了1940 年 8 巻 6 号 p. 292-294
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーAverage catch per boat per voyage as well as the average body-weight of Thunnus orientalis (T. & S.) fished during every decade of the months in the seas south of Kyûsyû was investi-gated with the daily records of the landings from long-line fishing-boats for tunny at the two ports Aburatu and Nango from Dec. 1934 to June 1939, as basis.
Generally speaking, larger fishes appearing early in the fishing season gradually give place to the smaller-sized. Minor fluctuations in the average body-weight, however, can be recog-nized as follows: -
Season: From mid-Dec. to early Jan., Early and mid-Feb., Mid to late March, Late April, Towards mid-June.
Aver weight: ca. 55 K wan (206kg), ca. 45 ?? (169kg), ca. 52 ?? (195kg), ca. 40 ?? (150kg), ca. 47 ?? (176kg)
Hauls: At the begin-ning of hauls, With earlier good hauls, With later good hauls, Towards, and At the end of hauls.抄録全体を表示PDF形式でダウンロード (210K) -
海老名 謙一1940 年 8 巻 6 号 p. 295-297
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーThe specimens obtained inside and outside the Inland Sea of Japan, viz., from Hiutinada, Akasi, Oita and Miyazaki respectively represent each a rather compact group so far as rate of growth is concerned. Therefore, migration of the teleost in and out the Inland Sea does not appear to occur to any remarkable extent. From an examination of the scales of the teleost obtained Qff Tokusima Prefecture, the annual ring seems to be formed in early March, its width growing on the average 15mm from 3rd to 4th one.抄録全体を表示PDF形式でダウンロード (231K) -
ムツとスケトウダラ安田 秀明1940 年 8 巻 6 号 p. 298-300
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーWith the scale and otolith of Scombrops chilodipteroides (see this Bulletin 8 (3), 1939, 141-142), and with centrum and otolith of Theragra chalcogramma (PALLAS) (see this Bull. 6 (6), 1938, 296-298), the results of determination of the number of annual rings are compiled in Tables 1 to 8. New annual rings seem to be formed one and half months later on centrum than on otolith, while the spawning, as inferred from gonad examinations, takes place one and half months later than the annual rings are formed on centrum (Fig. 3).抄録全体を表示PDF形式でダウンロード (232K) -
三善 清旭1940 年 8 巻 6 号 p. 301-302
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーWith Oryzias latipes (T. & S.), and Cyprinus carpis L. and its variety, experiments to show whether the shoals are attracted by ultrasonic waves in the water or not were caried out after TAUTI-YASUDA'S method, with a negative result.抄録全体を表示PDF形式でダウンロード (110K) -
山村 彌六郎1940 年 8 巻 6 号 p. 303-304
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーFor either the measurement of colour of shallow water through which bottom substance is seen, or that of the surface layer of water only, ordinary Forel's method is not available.
To avoid this inconvenience, an instrument, shown in Fig. 1, is deviced, which is based on the fact that when we put the water to be examined between two plane mirrors faced and parallel to each other, and transmit the rays of the sun from a slit (A) and reflect re-peatedly till reach another slit (B), causing the same effect as the rays pass through deep layer of water to make out water-colour on account of absorption and dispersion of molecules of water or suspending particles. (see Fig. 2).
The length of penetration (ln) is given by ln=2nd/cosθ, where, n denotes the number of refle-ction, d the distance of two mirrors, and θ the angle of incidence respcctively.
Linear correlations have been founded to exist between the colours observed by ordinary method (C) and those of the present method (C') as shown in Fig. 3.抄録全体を表示PDF形式でダウンロード (538K) -
神谷 鍾吉1940 年 8 巻 6 号 p. 305-307
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーTo perform in the shortest distance the observations of distinct vision, the author studied on the lattice and the checkers as the objects of vision.抄録全体を表示PDF形式でダウンロード (196K) -
柳川 鉄之助, 吉田 壽隆1940 年 8 巻 6 号 p. 308-312
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーMucilagenous substances of 8 kinds of green-algae (Ulva, Monostroma, Enteromorpha. Codium) were respectively separated. Some chemical constituents and physical properties of them were studied.
From the results obtained, it was fount that mucilagenous substances of the green-algae have excellent qualitios as adhesives.抄録全体を表示PDF形式でダウンロード (355K) -
大谷 武夫, 安藤 貞, 白鳥 弘恒1940 年 8 巻 6 号 p. 313-318
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーAs shown in Table 1 and Figs. 1-3, the liver increases its weight, as a rule, with the body length of the fish, and its weight stands in linear relation to its fat content, but vitamin A content in its oil (obtained by ether extraction) has no direct connexion with its fat content. Tables 2-5 and Figs. 4 and 5 point to the conclusion that vitamin A deposited in the egg is consumed as it develops and it is finally stored in the liver of the fry. Table 6 tabulates cholesterin and phosphatide content of the egg.抄録全体を表示PDF形式でダウンロード (328K) -
木俣 正夫1940 年 8 巻 6 号 p. 319-324
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーAs for the bactericidal action of various acids, studies hitherto reported show that the action is principally due to the hydrogen ion and is generally, with exceptions with certain acids, not very much due to the undissociated molecules or to the anions. So far as I am awere, however, little is known of the effects of acid on the physiological activity of bacteria, such as to decompose nitrogenous compounds.
In the present paper are embodied the observations on the effects of Na-salts of several organic acids in varied concentration upon the bacterial decomposition of extractive matter of meat of Scomber japonicus (HOUTTUYN). The results may be summarized as follows: -
1. Na-salts of the organic acids have effect on the bacterial decomposition, They retard the beginning of decomposition, increase the velocity, but limit the final rate of decomposi-tion.
2. With mono-basic fatty acids, the greater the molecular weight, the effects are ob-served the lower consentration. But, as the degree of dissolution has certain limit for those acids, of which molecular weight is greater than lauric acid, the effects are indifferent for concentrations of such acids over this limit.
3. So far as the present study is concerned, the effects in question are the greatest for mono-basic fatty acids, next for di-basic fatty acids, and the least for hydroxy-fatty acids.抄録全体を表示PDF形式でダウンロード (345K) -
岡田 光世1940 年 8 巻 6 号 p. 325-327
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーIn TANI'S experiment, (1) it was shown that the heat-transference by convection into the glass model of cans, filled up with water, obeys a similar law of similitude to that of heat conduction. The present paper gives discussions on the deduction of general laws from various fundamental differential equations concerning the convection.抄録全体を表示PDF形式でダウンロード (121K) -
井上 邦利1940 年 8 巻 6 号 p. 328-332
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーIn order to discover the best method by which the finest dried fish is to be obtained in the shortest time, I have at last succeeded in devising a certain experimental apparatus. This apparatus is so constructed that any degree of temperature, humidity, and the flowing speed of gas-the three important conditions of drying, may be had at will. I used a kind of sardine common in the Inland Sea-Engraulis japonicus. I took several sardines at a time, boiled them, and tested them in the apparatus.
A number of successive experiments have proved that, though by an old method of hotair drying, it is rather difficult to obtain an excellent dried fish in a short time, the best result is easily ensured by drying with high humidity i.e. removing the moisture contained in fish almost exclusively in steam at a temperature above the boiling point of the moisture contained in the fish.
This success may be attributed to the following reasons: -
1. That the oxidation of the oil and fat in the body of the fish is prevented as no air is allowed to come in contact with the fish in the course of drying.
2. That owing to the hydrolysis of part of the oil and fat in the fish by super-heated steam, some matters formed along with the process evaporate.
Further experiments have shown that this new method of drying with steam as a working substance, can be applied, besides fish, to other materia's, whose contact with the air during the process is not desirable.抄録全体を表示PDF形式でダウンロード (612K) -
尼崎 保1940 年 8 巻 6 号 p. 333-334
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーSeveral methods of the glazing have been studied to make it tight and thicker. A successful method was obtained to use the fine water spray diffused by the cold, dry and compressed air with a special nozzle,抄録全体を表示PDF形式でダウンロード (121K) -
奥野 博1940 年 8 巻 6 号 p. 335-336
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーIn quick freezing-reducing the temperature of a fish body from 0°C to -5°C within 35 minutes at its centre the relation between the thickness of the fish body and the temperature of brine was estimated by means of the law of similitude.抄録全体を表示PDF形式でダウンロード (126K) -
富枡 建造, 加藤 信義1940 年 8 巻 6 号 p. 337-342
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーAccuracy of the measurement of the vacuity in cans by the dial vacuum indicator has often been reported(1)(2) by one of the authors, but any comparison with that of the tapping inspection has never been made.
In this experiment we have made a comparison between them, taking as the test cans about eight dozens of flat no. 1, 1 lb salmon cans.
The results of the experiments are shown in Figs. 3, 4 and 5. The average deviation of the tapping inspection value from the actual vacuity measured by the ordinary piercing vacuum gauge is 4•38 inch in mercury column as shown in Fig. 3 the υ-υT diagram, and that of the measured value with the dial vacuum indicator is 4•24 inch as shown in Fig. 4 the υ-υD diagram.
As the standard vacuum scale of the dial indicator in this case, we adopted the mean straight line of the measured points on the υ-β diagram (vaccum and end depth diagram) which h ?? d been obtained as the results in the previous experiment on another group of flat no. 1, 1 lb salmon cans(3). This standard scale line is shown by the straight line A0 in Fig. 5 the υ-β diagram. The straight line A in the same figure is the mean line of the measured values of this time expressed in the can end depth.
By the tapping inspection it is said that not only the vacuity in cans is presum ?? d, but the relation between the volume of the heardspace and the weight of the net content of cans, the tightness of the seams are decided and flat sour cans are also detected with only talent and experience, but we have found by this experiment the same accuracy of the measurement can be obtained by the dial vacuum indicator, wi ?? h the simplest instrument and with the speediest operation which does not n ?? cessitate any talent, experience nor skillful ?? ss so far as only the vacuity is concerned.抄録全体を表示PDF形式でダウンロード (435K) -
寺尾 新1940 年 8 巻 6 号 p. 343-346
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーThe commercially dressed skins of fish and marine mammals, viz, Carcharinus japonicsu (T & S.), Trionace glauca (L.) Scoliodon walbeehmi (BLEEKER), Gymnothorax kidako (T. & S.). Zalophus lobatus (GRAY), Delphinus delphis L., Physeter catodon L., and Balaenoptera musculus L. were examined under the microscope with Suzuki's universal microscopical printing method, which consists of getting impression of the surface of the material on thin transparent sheet of celluloid. The fibrous matter of the leather was found mostly running obliquely longitudi-nally and united with transversely directed one so that it forms an irregularly shaped rhombic network. The general feature of the net-work is evident in the configuration of the upper-surface which is so characteristic to each species as to aid its identification. (Fig. 1). The findings stand in harmony with the fact that the leathers of aquatic animals are liable to be torn transversaly when used as boots, bags, etc.抄録全体を表示PDF形式でダウンロード (253K) -
大島 泰雄1940 年 8 巻 6 号 p. 347-348
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーDo shipworms go from one board to another, both of which are closely applied with each other? In the present work the square timbers with the sheathing have been used as the test materials and the results are summarized as follows.
In the parts I, III and V where both of the sheathing and the embedded timber are closely applied with each other, many of shipworms go easily to the former. But in the parts II and IV where both are not in contact with each other, at all, none of them penetrates the sheathing to go to the embedded timber.
Attention is drawn to the relation between the penetrating and the total burrows. Table I shows that the data are variable at the various parts of different timbers, a ?? hough there is a tendency as shown in Table 2. It seems to be caused by the dissimilarity of the contact which will be expected to come about in such structure of the test materials.抄録全体を表示PDF形式でダウンロード (154K) -
松井 佳一, 内橋 潔1940 年 8 巻 6 号 p. 349-354
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーThere are two varieties of Turbo cornutus SOLANDER in the seas surrounding Japan: spined and spineless ones. The Japan Sea and the waters east to Kusimoto (Wakayama Prefecture) on the Pacific side offer the former while the majority of the top-shell found in the Inland Sea represent the latter.
Kii Channel, which connects waters of the Pacific and the Inland Sea, provides a living, place for more spined top-shells than the Inland Sea and their percentage increases as we go down the channel to the south. Approximately 50% of the top-shells have spines which are found on the coast of Tosa.
Three types of spined top-shells may be recognized: A, B and C where all top-shells are spined, the majority of the shells are referable to type A, type C being rarest. Where spineless top-shells are abundant, type C leads the list; next comes type B, and most scarcely occurs type A.
Significant correlation is seen between the length of the shell and the number of the spines, the larger the shell the more numerous the spines. Those found in the Japan Sea have many spines and those in the Pacific Ocean have few.
Careful observations have led to the conclusion that the correlation between the length of the shell and the number of spines is nearly the same in value among those found in Uradomi (Tottori Prefecture), Yobuko (Saga Prefecture), Siganosima (Hukuoka Prefecture), Turuga (Hukui Prefecture), Takeno (Kyôto Prefecture) and Kasumi (Hyogo Prefecture), but those found in Hagi (Yamaguti Prefecture), Simoda (Sizuoka Prefecture), Saisyuto (Tyosen), Kusimoto (Wakayama Prefecture), Dozen, Oki Islands (Simane Prefecture), Izima (Tokusima Prefecture) and Hunakosi (Miye Prefecture), display respectively their local characteristics, no intermingling being detected among these districts.抄録全体を表示PDF形式でダウンロード (1241K) -
山田 知治1940 年 8 巻 6 号 p. 355-356
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーDeformed salmon and trout have been described by Y. HANDA, P. D. MALLOCH and many others. But such is of rare occurrence in Plecoglosssus altivelis. In this paper are given mea-surements of five deformed specimens (Tab'es 1 and 2) and corresponding ones of two ordinary specimens (Tables 3 and 4) of this species obtained from the Yoichi River, Hokkaido in the summer of 1939. All the deformed ones were found sexnally mature.抄録全体を表示PDF形式でダウンロード (788K) -
妹尾 次郎1940 年 8 巻 6 号 p. 357-364
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーTwo specimens of porpoise obtained off Ozernaya, Kamchatka were observed externally and one of the two was measured in respect to 52 items. Thus they appear to be referable to Phocaenoides dalli (TRUE) which has been rather imperfectly known. The reader is referred to the accompanying figures and Tables.抄録全体を表示PDF形式でダウンロード (1263K) -
石川 昌, 中村 中六1940 年 8 巻 6 号 p. 365-366
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーGlossogobius brunneus is a large goby distributed from the coasts of tropic to central Japan. It lives on the bottom in brackish or shallow waters, hidden under the stones or weeds. It spawns in summer extending from the end of July to the beginning of September. The eggs are fixed to the under surface of stones or piles and guarded by the male, who aerates them by keeping up a flow of water over the spawn through the action of his dorsal fin, of which length is more longer than that of the female. The embryo is kept in an elongate and pyriform egg-shell which measures about 3•5mm in length. When the eggs are laid, a tuft of adhesive threads, with which they are attached in cluster to various objects, appears at the narrow end of the shell-membrane (See Figs. 2 and 3). It is seen to be a minute branch of outer shell-membrane. The embryo is hatched about in 80 hours after the egg being spawned at water temperatures of 26°C. The newly hatched fry measures about -2•07mm in total length. The favorable salinity for normal development of the eggs ranges from 10 to 22‰.抄録全体を表示PDF形式でダウンロード (150K) -
中村 中六1940 年 8 巻 6 号 p. 367-372
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーIn the present paper the author has dealt with the ecological meaning of the relation between the vitality of two species of sand-dwelling bivalves in the air and their vertical distributions.
(1) Caechella chinensis is restricted to a zone in the upper part of the shore, whereas Venerupis philippinarum occupies a zone mainly below the Caechella zone.
(2) Venerupis survives about 2•5 days in summer and 7 days in winter, while Caechella does about 8-9 days in summer and 27 days in winter, when both of them are in the same conditions.
(3) Such difference of the duration is resulted from broth of physical and physiological nature, that Caechella loses its moisture more slowly and for the same degree of the desication tolerates more than Venerupis.抄録全体を表示PDF形式でダウンロード (380K) -
IV. 眼下骨の特徴に基くメバル亞科とカサゴ亞科の新分類に就て(豫報)松原 喜代松1940 年 8 巻 6 号 p. 373-378
発行日: 1940/03/25
公開日: 2008/02/29
ジャーナル フリーThe separation of two subfamilies, Sebastinae and Scorpaeninae, has been made on. the basis of counts in dorsal spines and vertebrae. 12 spines and 24 vertebrae for the latter subfamily and higher counts in both spines and vertebrae for the former (JORDAN and STARKS, 1904). From an examination of 47 species referred to 16 genera (Table I), the count of vertebrae was found graduating from species to species, not always coordinating with that of dorsal spines. The number of vertebrae within species, moreover, was not so constant as formerly believed, but a considerable degree of variation was noticed to exist in some species. These meristic characters, therefore, can not be of importance in the demarcation of two subfamilies.
The under-mentioned characters involving configuration and number of suborbital bones demand to assort these genera included in these two subfamilies to three groups (Fig. I).
(1) FIRST TYPE (Fig. I, 1).-In this probably most primitive type including Sebastes, Sebastodes, Sebastichthys and Sebastiscus, the second suborbital bone is always T-shaped, short and tapering posteriorly into a pointed or very rarely truncated (only in Sebasticus) tip, and remote from the upper ridge of preopercle; third to fifth or sixth suborbital bones invariably present, firmly attached with each other in a series surrounding the posterior margin of orbit, with the exception of the last one which is separated from the others and situated on sphenotic bone.
(2) SECOND TYPE (Fig. I, II and III). - This type involves Helicolenus, Hozukius, Sebastosemus, Sebastolobus and Plectogenium, of which the first two closely resemble the former type in general appearance, but the second suborbital bone, being modified T-shape, is becoming narrower posteriorly and truncated at the extremity, and firmly attached to the upper ridge of preopercle, whilst in other three genera the second suborbital bone much broader, T-shaped in Sebastosemus, but uniformly broad in Sebastolobus and even expanded posteriorly in Plectogenium and firmly attached to the upper ridge of preopercle; third to fifth suborbital bones always present in all genera noted above and firmly attached witheach other except the last one which is located as in the first type.
(3) THIRD TYPE (Fig. I, IV). - This most specialized type of the three involves Hoplosebastes, Scorpaenodes, Merinthe, Pontinus, Scorpaena, Scorpaenopsis and Setarches. The second suborbital bone, never T-shaped, is uniformly broad or gradually becoming wider posteriorly or toward middle part, and firmly attached to the upper ridge of preopercle, forming a typical suborbital stay; the third to fourth or fifth suborbital bones usually absent, but frequently a small suborbital bone is placed both on sphenotic and on the space between second suborbital bone and sphenotic bone, but they are separated from each other instead of being firmly connected.
In these three types, the second one seems to represent the intermediate form, but its resemblance to the first type in features of third to fifth suborbital bones convinced the writer to place it under the category of the latter type although the second suborbital bone of Plectogenium and Sebastolobus closely resembles that of the third type.抄録全体を表示PDF形式でダウンロード (475K)
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