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| Registros recuperados: 231 | |
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| Brinck, J.W.. |
| THE GOLD DEPOSITS IN SURINAM AND THE DISTRIBUTION OF CONCESSIONS THROUGH THE COUNTRY The fieldwork on the occurrence of primary and secondary gold deposits in Surinam on which this thesis is based was carried out by order of the Welfare Fund Surinam (Welvaarts Fonds Suriname) during the periods December 1950—September 1952 and September 1953—January 1954. The regions investigated form part of Surinam (formerly Dutch Guiana), South America. These regions are indicated by heavy lines on the enclosed geological survey map of Surinam, after Schols and Cohen (1953) and IJzerman (1931). As participant of a medical scientific expedition to the southern borderlands of Surinam, I made investigations on the occurrence of gold in this part of Surinam. The trail of... |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/505854 |
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| NN. |
| Flora Zambesiaca. On page 413 I have given, unfortunately, an entirely misleading statement on the organization of this planned Flora, which will be a joint effort of the Royal Botanic Gardens, Kew, and the British Museum. There will be two editors of equal status, Mr Exell, of the British Museum, and Mr Brenan, of Kew, with an editorial Committee. |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/533306 |
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| NN. |
| Mr A.H.G. Alston was at the Rijksherbarium, Leyden, working on Malaysian Pteridophytes, May 27-June 11, going on to Brussels and Paris for the same aim. In honour of Prof. I.W. Bailey the Chronica Botanica Co has published an account of his writings in a special issue under the title ”Contributions to plant anatomy” (Chron. Bot. 15, pp. xxvi + 262, t. 1-23). |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/532815 |
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| Stolk, A.. |
| Several cases of deformities in the spinal column were described in fishes, viz. lordosis in the bitterling Rhodeus amarus) by ROTH (1922), in the minnow (Phoxinus phoxinus) by ROTH (1922), in the pike (Esox lucius) by ROTH (1922) and PLEHN (1924); kyphosis in the toothcarps (Cyprinodontidae) by ROTH (1922); scoliosis in the carp Cyprinus carpio) by HOFER (1904), ROTH (1922) and PLEHN (1924); kyphoscoliosis in the toothcarps by ROTH (1922); kypholordosis in the highly arched Aischgründer race of the carp by SPICZAKOW (1935) and in the carp by SCHäPERCLAUS (1941, 1954); plecospondylic spinal column in the eel (Anguilla anguilla) by SCHäPERCLAUS (1941, 1954) and in the guppy or millionfish (Lebistes reticulatus) by STOLK (1955 a). SCHRäDER (1930) described... |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/505247 |
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| Hartog, C. den. |
| The literature on the recent immigration of the Australian barnacle Elminius modestus to West European coasts is rather exhaustive. The present author has given details on the exact centre of immigration on the Dutch coast. The spreading from this centre has been followed in subsequent years (DEN HARTOG, 1953). From the French coast only few data are known. The localities where it first established itself are unknown. Speculative though it may be, therefore, it seems useful to try a reconstruction of the immigration of Elminius in France as exact data are still available. In July 1951 the author found Elminius on the Boulonnais coast (Pas de Calais: Le Portel, Boulogne sur Mer, Wimereux, Ambleteuse, Audreselles, Cap Gris Nez). On account of our findings on... |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/504982 |
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| NN. |
| Mr Smitinand, Officer-in-Charge, Section of Botany, Forest Products Research Division, Royal Forest-Department, Bangkok, Thailand, writes, that there is still a large tract of virgin tropical rain-forest in the Peninsula not yet properly explored. An expedition from any foreign country is heartily welcome with cordial co-operation. |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/533222 |
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| Bremekamp, C.E.B.. |
| In my “Notes on the Acanthaceae of Java” (in Verh. Kon. Ned. Akad. v. Wetensch., Afd. Natuurk. 2nd Sect. 45, 2: 29,1948) I discussed the three epithets that had been applied to Rumph’s “Folium tinctorum” after the latter had been transferred to the genus Peristrophe, which, as is well known, was based on this species. Nees, the author of the genus, has used the name P. tinctoria, because he regarded Justicia tinctoria Roxb. as the oldest binomial that had been applied to it. This was contested both by Merrill and by Hochreutiner. Merrill was of opinion that Justicia bivalvis L (1759) was its oldest name, but as I pointed out l.c. this binomial must be regarded as a “nomen confusum”; the description indicates a Dicliptera species, whereas the plate in the... |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/535105 |
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| Snoep, J.P.. |
| In the summer of 1953 and 1954 a detailed 1:25.000 map was made of a part of the central Pyrenees. The mapping ranged from Salardu (Valle d’Aran) to Mongarri, (northeast of Salardu). Thanks to a grant from the Molengraaff fund a special study could be made of the structural geology of this district in the summer of 1954. In the course of this study, particular attention was given to the complicated folding tectonics and numerous “minor structures” were measured and examined. This method made it possible in some cases to locate synclines and anticlines without seeing their hinges so that some of the stratigraphy could be reconstructed. The stratigraphical sequence as a whole remains doubtful however, as all the layers in the district are nearly vertical and... |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/505604 |
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| Hooijer, D.A.. |
| For a study in progress on the fossil Bovidae collected in Java by Eug. Dubois the necessity was felt to create a new genus for the inclusion of the species described as Leptobos groeneveldtii by Dubois (1908, p. 1261). The diagnosis is presented in this place in order that the name may be made available. Epileptobos gen. nov. Diagnosis: Large Bovinae with relatively broad and low skull. Horns in both sexes. Parietal extremely short, forming a sagittal crest that begins opposite the centre of the horn cores, and passes backward into a strong triangular parieto-occipital eminence, much raised above the fronto-parietal suture and overhanging the occipital. Temporal crests prominent. Occiput triangular in back view, the top of the triangle being formed by the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.22; 42.84. |
| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/318656 |
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| Joncheere, J.G. de; Steenis-Kruseman, M.J. van. |
| Blatter, E. & W.S. Milliard. Some beautiful Indian trees. 2nd edition revised by W.T. Steam. Publ. by Bombay Natural History Society, Bombay, India. March 3, 1955. 8°. i-xv, 1-165 pp., 43 photogr., 31 coloured plates, and text-figures; clothbound. Sh. 30/- net. A simple, illustrated guide to some of the most beautiful flowering trees to be seen in India and Pakistan. It should be of use and interest throughout the tropics as most of the plants treated are grown as ornamentals outside their native country. Thirty nine species have been fully described with accurate synonymy, and notes on distribution, gardening, uses, economic value, vernaculars, domestic uses, medicinal properties, ethnobotany, and ecology of leafshedding, flowering and fruiting... |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/533211 |
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| Hammen, L. van der. |
| INHOUD Pag. I. Inleiding.................. 1 II. Historisch overzicht............... 3 III. Epidemiologie en oecologie............. 13 IV. Klinische waarnemingen, pathologie, diagnose en behandeling .... 24 V. Aetiologie.................. 27 VI. Scrub itch.................. 28 VII. Preventieve maatregelen.............. 31 VIII. Taxonomie van de Trombiculidae . ......... 36 IX. Conclusies.................. 44 X. Literatuur ................. 45 I. INLEIDING Gedurende de tweede wereldoorlog, in de strijd tegen Japan, hebben de geallieerde troepen in Z.O. Azië en het gebied van de Z.W. Pacific kennis gemaakt met een ernstige ziekte, scrub typhus genaamd, die in korte tijd de gevechtswaarde van de troepen aanzienlijk kon verminderen. Alleen reeds in Nederlands... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 44.75. |
| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/317202 |
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| Holttum, R.E.. |
| The preparation of a new account of the pteridophytes of the whole Malayan region is a very large undertaking, and when one is at the beginning of it, one cannot foresee what may happen during the course of its execution. It is in part a voyage of discovery. The work will have to be done in stages, and published in parts. To wait until it is all completed, and then to coordinate and re-arrange it before publication, would mean an unreasonably long delay. But to publish it in parts will inevitably mean that one will have new ideas about the early parts as one works on the later ones. My hope is that, when the work is finished, it will be possible to have a new and better conception of the inter-relations of the parts. Present schemes for definition of... |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/532850 |
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| Westhoff, V.. |
| Sedert 1948 hebben J. van Dijk Jr. en ondergetekende in het moerasgebied van N.W.-Overijsel jaarlijks op verscheidene plaatsen een merkwaardige vorm van Carex diandra Schrank aangetroffen, die zowel in groeiwijze als in standplaats van de normale vorm verschilt. Dit valt daarom op, omdat Carex diandra overigens een nauwelijks variabele soort is, met een uitgesproken, beperkt milieu. Do soort komt in N.W.-Overijsel nog tamelijk veel voor, en wel, evenals bv. in het Vechtplassengebied, in do zgn. mesotrofe trilvenen, die ontstaan door verlanding van stilstaand, niet door de wind bewogen water in smalle, vaak lange petgaten (dit zijn vroeger uitgeveende gaten). Het kenmerk van oen trilveen is: 1. dat het met de waterstand op en neer gaat (dus niet vatbaar is... |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/534274 |
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| Boterenbrood, A.J.; Donsellaar-Ten Bokkel Huinink, W.A.E. van; Donselaar, J. van. |
| Dans la végétation des dunes du Languedoc J. BRAUN-BLANQUET (1952) distingue trois associations, à savoir; 1) l’Agropyretum mediterraneum parmi et sur les premières dunes basses; 2) l’Ammophiletum arundinaceae sur les dunes plus hautes; et 3) le Crucianelletum maritimae dans les dépressions et en arrière des dunes. Or, il est établi que le développement de la première association et le passage de celle-ci à la deuxième sont accompagnés d’une édification de dunes, et que la troisième provient de la dégénérescence de la deuxième. KÜHNHOLTZ-LORDAT (1923) a le premier attiré l’attention sur le rôle essentiel joué par la végétation dans l’édification des dunes du Languedoc. Les résultats de ses recherches ont été confirmés par VAN DIEREN (1934) aux Pays-Bas.... |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/535099 |
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| Bremekamp, C.E.B.. |
| It can hardly be denied that the expression “General Plant Morphology”, which is so often met with in botanical textbooks, has little or no meaning. A general morphology of the Plant Kingdom would have to occupy itself with those morphological features that are common to all groups of plants, which means that it would have to confine itself to the common features of the cell structure and eventually to such peculiarities as are independent of the uni- or pluricellular structure of the plant body, e.g. its enclosure within a rigid envelop. However, when we realize that there is in this respect no fundamental difference between the common features of plants and animals or, at least, of some groups of animals it will be clear that the use of the expression... |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/534927 |
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| NN. |
| The rapid accumulation of data necessitated the issue of a new bulletin. It was with deep gratitude that I remembered, in the Xmas holidays during which I was compiling this text, the many letters received from various sides expressing appreciation for our enterprise. Editor’s hearts need sometimes a little warming; ours remains distinctly encouraged. Particular encouragement I got from the British Colonial Office which, stimulated by the Government of Malaya, has given a grant to our Foundation to cover part of the travel and accomodation expenses of Dutch collaborators in the United Kingdom, provisionally for two years. This manifest sign of appreciation from the British and Malayan Governments for our work is significant and most gratefully remembered... |
| Tipo: Article / Letter to the editor |
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| Ano: 1956 |
URL: http://www.repository.naturalis.nl/record/533391 |
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| Registros recuperados: 231 | |
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