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| Registros recuperados: 51 | |
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| Lam, H.J.. |
| It has so often been emphasized that the flora of large tropical islands like New Guinea is still very imperfect, that the impression has been established that the data available should be in a state unapt to produce a conspectus or to procure valuable conclusions. Though it is certainly true that there are still immense plots of land entirely unknown from a botanical (or any other) point of view, and that we know but a part (but most probably more than one half) of the Papuan species of Pteridophytes and Spermatophytes, I am inclined to think that it is more than anything else the scattered nature of those data, that prevented us from realizing their intrinsic value. The time has come, I think, to pauze and to realize what has been done in the past years;... |
| Tipo: Article / Letter to the editor |
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| Ano: 1934 |
URL: http://www.repository.naturalis.nl/record/524533 |
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| Stiasny, G.. |
| Seit dem Abschlusse des Verzeichnisses der Brachiopoden-Sammlung des Naturhistorischen Reichsmuseums in Leiden im Juli 1932 (diese Zeitschrift, Deel 15, Afl. 3/4) ist die Sammlung durch einige Neuerwerbungen und Geschenke nicht unerheblich bereichert worden. Ich gebe daher in der folgenden kurzen Liste eine gedrängte Uebersicht über das seither neu hinzugekommene Material. Dasselbe enthält unter anderem Exemplare von der Willem Barents- und von der Challenger-Expedition, Doubletten aus der schönen Brachiopoden-Sammlung des Zoologischen Museums in Amsterdam. Es sind zumeist sehr schöne, gut erhaltene, typische Stücke, Alkoholmaterial. Bezüglich des Systems und der Synonyma muss ich hier aus Raummangel zumeist auf meine erste Mitteilung verweisen. Genus... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.72. |
| Ano: 1934 |
URL: http://www.repository.naturalis.nl/record/318694 |
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| Lanjouw, J.. |
| This paper deals with some specimens of Euphorbiaceae from various collectors. The plants have been collected in French and British Guiana. The specimens were sent to me for determination by the Kew Herbarium and the Herbarium of the New York Botanical Garden. Some of these specimens had to be considered as new species, others were new finds for British or French Guiana while the remainder of the list is added for sake of completeness. The author wishes to express his thanks to the directors of the Kew Herbarium and the Herbarium of the New York Botanical Garden for their assistance with the material. The arrangement of the genera is that of Pax in Engler, u. Prantl, Natürl. Pflanzenfam. sec. edition Vol. 19c (1931). |
| Tipo: Article / Letter to the editor |
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| Ano: 1934 |
URL: http://www.repository.naturalis.nl/record/535165 |
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| Posthumus, O.. |
| This paper deals with the ferns collected by G. Stahel during his expedition to the Wilhelmina-range in the interior of Surinam. The material was partly collected in the hills at low altitudes, on the Gran Rio during the voyage and near the camp at the starting point for the mountains, mostly, however, on or near Summit 910, at about 800 m alt. (May 14, 1926), on or near Summit 1200, about 920 m h. (June 9, 1926), near Camp 40½ (June 12, 1926) at the same altitude, and on or near Summit 1280, about 1200 m above sea-level. Some plants again were collected at lower altitudes on the Coppename creek (June 11, 1926) and in the south-western part of Surinam on the Koetari river (October 16, 1926). The exact altitude at which the specimens were collected is... |
| Tipo: Article / Letter to the editor |
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| Ano: 1934 |
URL: http://www.repository.naturalis.nl/record/534815 |
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| Henrard, J.Th.. |
| Some years ago I had the opportunity to study more extensively a very interesting group of grasses, belonging to what is now accepted as a distinct genus, the genus Digitaria, formerly belonging as a subgenus to the genus Panicum. As to living plants of this group I was familiar with two european species, also found in the Netherlands. They are treated in the Synopsis of Ascherson nd Gräbner and once more in the second edition of this work. Under Panicum they bear the names P. lineare KROCKER and P. sanguinale L. The first species belongs to HACKEL’S „Ternata”, the name is invalid on account of the Panicum lineare of LINNAEUS, a species described from India, we know that KROCKER’s plant does not occur in India and it is therefore necessary to look for the... |
| Tipo: Article / Letter to the editor |
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| Ano: 1934 |
URL: http://www.repository.naturalis.nl/record/524773 |
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| Bremekamp, C.E.B.. |
| In my revision of the Rubiaceae in Pulle’s Flora of Surinam two genera, viz. Pagamea and Perama, which are now usually included in this family, are relegated to an appendix. On account of its superior ovary Pagamea was formerly reckoned to the Loganiaceae, from where it was referred to the Rubiaceae by Baillon and K. Schumann, who were of opinion that its solitary ascending ovules, and the valvate aestivation of the corolla lobes assigned it a place among the Psychotrieae. I think however that they overestimated the value of these characters, which are of a rather general nature, and that Pagamea both in the structure of its inflorescence and in that of its flowers shows so little resemblance to the Psychotrieae that it is impossible to include it in this... |
| Tipo: Article / Letter to the editor |
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| Ano: 1934 |
URL: http://www.repository.naturalis.nl/record/535158 |
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| Boschma, H.. |
| The present paper contains the chief particulars of a specimen in the collection of the United States National Museum, differing from the hitherto described species of Sacculina in its anatomical characters and in those of the cuticle of the mantle. Sacculina punctata nov. spec. Kaseda, Satuma, Japan, T. Urita coll. et don., 1 specimen on Plagusia dentipes de Haan, U. S. N. M. N°. 48337. Diagnosis. Testes almost entirely in the posterior part of the body, outside the visceral mass, vasa deferentia partially in the visceral mass. The two testes well developed, completely separated, forming more or less globular or somewhat compressed, wide sacs, which are connected with the wide vasa deferentia by a short, narrow tube. Colleteric glands with numerous... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.74. |
| Ano: 1934 |
URL: http://www.repository.naturalis.nl/record/319008 |
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| Baas Becking, L.G.M.; Nicolai, E.. |
| For the ecologist systematic units are actors in a play. Whatever their christian- and family-names may be — it is their role, whether master or servant, whether villain or hero — which determines the character of the performance. This performance has, moreover, the property of being both continuous and simultaneous: all scenes are given at once. Such a continuous and simultaneous performance is called a biocoenosis. In a great many ways, a biocoenosis reminds us of an organism. For the coördination between organs or tissues, or even cells is also continuous and simultaneous. A biocoenosis is a higher vital unit, and may be approached by the same methods which we use for the study of organisms (V. D. KLAAUW (24)). In the systematic approach we establish... |
| Tipo: Article / Letter to the editor |
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| Ano: 1934 |
URL: http://www.repository.naturalis.nl/record/526290 |
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| Wittenrood, H.G.; Blöte, H.C.. |
| Since the appearance of ,,Age and Area" by Dr. J. C.Willis in 1922 the progress in this matter has not been so great as before. From the contribution of a few chapters by some well-known biologists, and from many approving remarks by others quoted throughout the book one might derive that the theory of origin and evolution of species, etc., presented in it, had already a remarkable success. But there is also a whole chapter in the book, containing the diversified objections, to which Dr. Willis makes head. The „very strong evidence based upon definite facts, not upon a priori reasoning", however, required by Willis (p. 233), has turned out to be more of a repetition of the same statements with more or less different materials than of the discovery of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.65. |
| Ano: 1934 |
URL: http://www.repository.naturalis.nl/record/318295 |
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| Goddijn, W.A.. |
| A phylogenetic system resulting from comparative morphological studies claims to be the expression of evolution. The character of any phylogenetic classification based on morphological studies exclusively is a speculative one. The fragmental facts procured by fossil relicts from earlier geological periods are also morphological and allow only the conclusion that evolution took place, but in which way changes evolved has not been stated by immediate observation. Nobody escapes from the idea that all living beings existing yet, have originated from those in the past. It is undeniable that the vegetation which covered the earth in former periods has been changed. This historical process seen as a continuity possible by the power of reproduction of the... |
| Tipo: Article / Letter to the editor |
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| Ano: 1934 |
URL: http://www.repository.naturalis.nl/record/526036 |
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| Augener, H.. |
| Fam. ARICIIDAE. Aricia foetida Clap. Fundort: 73° N. 25° 0. 220 fm. 19.VII. 1878. -W. B. 1878/79. — M. L. Von diesem Fundort liegen zwei hinten mehr oder weniger unvollständige Exemplare vor, von denen das kürzere mit noch 95 Segmenten ca. 33 mm lang ist. Ich bemerke über dieses Tier folgendes. Die Kiemen beginnen am neunten Borstensegment. Die Thoraxregion umfasst ca. 25 Borstensegmente, vom ca. 26. Borstensegment an haben die Ventralparapodien die für die abdominale Region charakteristische Form. Bauchpapillen finden sich am 18. bis 26. Borstensegment, an dem letzten dieser Segmente nur noch in der Einzahl jederseits, im Maximum zu 10—12 jederseits. Zwischen den Parapodasten jeder Körperseite ist ein intermediärer Cirrus sicher vorhanden, ich konnte sein... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.76. |
| Ano: 1934 |
URL: http://www.repository.naturalis.nl/record/318471 |
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| Barrillon, X. |
| Le remorquage de fils et de filets a donné lieu à une note antérieure résumant les résultats obtenus avec des fils lisses et avec des avenos. Ces essais ont été poursuivis avec des fils à noeuds. Nous rendons compte ici des résultats obtenus. Les méthodes expérimentales et les modes de calcul sont les mêmes que précédemment. [OCR NON CONTRÔLE] |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1934 |
URL: http://archimer.ifremer.fr/doc/1934/publication-5803.pdf |
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| Verdoorn, Fr.. |
| In dieser Arbeit habe ich versucht, eine möglichst vollständige Revision aller von Ozeanien, Australien und Neuseeland angeführten Holostipae zu geben. Mit nur sehr wenigen Ausnahmen konnte ich fast alle Originale untersuchen. Ich habe auch den grössten Teil der Belege für die anderen Literaturangaben rediviert. Im folgenden werden nur Fundorte genannt, von denen ich Material untersuchen konnte. Die vorliegende Arbeit schliesst sich eng an meine Bearbeitung der Holostipae in „Nova Guinea” XVIII: 1—8 (1934) an. Früher, 1930, de Frullan. VIII (Nederl. Kruidk. Arch. 1930, p. 155—175), habe ich eine Revision der ozeanischen Frullanien gegeben. Damals wies ich schon auf die relativ kleine Anzahl der endemischen Arten Ozeaniens hin. Für die Holostipae kann man... |
| Tipo: Article / Letter to the editor |
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| Ano: 1934 |
URL: http://www.repository.naturalis.nl/record/525845 |
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| Lütjeharms, W.J.. |
| Bei der Einteilung der Organismen, welche in dieser Arbeit mir von botanischem Gesichtspunkt betrachtet wird, ist die Frage nach „wesentlichen” Merkmalen oder Einteilungsgründen von grosser Wichtigkeit. Es ist die Frage nach der Substanz (Essenz) und den akzidentellen Merkmalen. Der Substanzbegriff entstammt der Aristotelischen Logik und Metaphysik. Aeltere Botaniker, die sich die prinzipiellen Grundlagen ihres Systems klarzustellen versuchen, sind z.B. Cesalpin und Ray. Cesalpin kommt in seiner Auffassung der Substanz Aristoteles sehr nah. Ray, obwohl öfters noch Aristotelisch beeinflusst, hat eine typisch empiristische Auffassung der Substanz, wodurch er sich den Ansichten LOCKEs anschliesst. Auch in den modernen Theorien treten substantielle Formen auf.... |
| Tipo: Article / Letter to the editor |
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| Ano: 1934 |
URL: http://www.repository.naturalis.nl/record/525803 |
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| Danser, B.H.. |
| After Mr. S. BLOEMBERGEN had planned a revision of the Cornaceae, sensu amplissimo, of the Netherlands Indies (inclusive those of the Malay Peninsula and the non-Dutch parts of Borneo and New Guinea) and had received, for that purpose, herbarium materials from different institutes, it appeared desirable to him to confine his revision to the Alangiaceae. I therefore took the Cornaceae, sensu stricto, for my account. It was very convenient to me that Mr. BLOEMBERGEN had already composed a nearly complete list of literature wanted. The herbaria of which materials have been worked up in this revision, arE the following. B = Herbarium of the Botanic Garden, Buitenzorg, Java. Be = Herbarium of the Botanic Garden, Berlin—Dahlem. L = State Herbarium, Leiden. S =... |
| Tipo: Article / Letter to the editor |
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| Ano: 1934 |
URL: http://www.repository.naturalis.nl/record/525014 |
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| Registros recuperados: 51 | |
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