In the above article endeavours have been made to outline the development of Biology in the Netherlands during the last 20 years. At Utrecht under the supervision of A. A. Pulle studies have been made of the flora in the Malayan Archipelago. Internationally Dirks and Verdoorn in particular have acquired great merit in Botany. In 1935 the sixth International Botanical Congress was organised in Amsterdam.

Assuming that the political information provided to the voters directly determines the communication efficiency of the political system in a democratic framework, this paper therefore proposes and tests some hypotheses explaining the politician's behaviour in that respect. Those hypotheses are tested on statements made by major Belgian parties' leaders at the eve of the 1978 and 1981 national elections. Having first related the degree of reserve on the politician's statement with his party's share in the constituency, a positive relationship is (...) found. The second hypothesis states that the degree of reserve in the politician's statement is explained by his reaction either offensive or defensive triggered by the variation in his party's share given the outcome of the precedent election. It is observed that a defensive attitude is adopted by parties having known a reduction of their market share. The third question dealt with examines the infiuence of the size of the party on the abovementioned relationship between the variation of the market share and the degree of reservedness. The results show that apparently the elimination of the size effect does not affect the findings concerning the second hypothesis. (shrink)

The main point developed in this paper is the demonstration of the attitudes characterizing the major Belgian political parties. This is achieved through a factorial analysis applied to a set of data resulting from the answers given by the major parties leaders to various specific questions regarding bath the prevailing economie as well as institutional issues at the eve of the election of December 17th, 1978. From that point it has been possible to compare those results with the one obtained (...) from the data concerning the 1974 programmes.The results of the statistical analysis show that white in 1974 the strongest positive associations between parties corresponded to tht traditional ethical and socioeconomic cleavages, four years later the linguistic dimension was predominant with a stronger homogeneity characterizing the Dutchspeaking group than what could be observed for the Frenchspeaking one.The factorial analysis allows for a graphical representation of the respective positioning of the parties along the statistically significant factorial axes. Applied to two sets of data, the first one on purely institutional matters, the second one on both institutional and economic policies, the analysis reveals clearly through the various graphs presented the linguistic cleavage as well as the divergences about the extent of regional competences and minorities protection, on the one hand, and, on the other hand, the degrees of regional economic autonomy and of public intervention in the business life. (shrink)

Ordinairement les manuels de biologie débutent par une exposition des caractéristiques qui distinguent la nature organique de la nature anorganique. En définissant et en limitant aussi exactement que possible son sujet, la biologie, le biologue ne fait pas autre chose que le mathématicien. La présente étude nous montre les obstacles presque insurmontables auxquels se heurtent le biologue et le mathématicien. A les bien considérer, les anciennes distinctions entre l'organisme d'une part et la matière non-organisée ou un système statique matériel, comme (...) la machine, d'autre part, se basant sur la nutrition, la respiration, les échanges vitaux et le mouvement ne tiennent plus debout. L'auteur allègue les expériences récentes de W. M. Stanley (Rockefeller Institute à Princeton) d'où il appert qu'il peut y avoir aussi génération dans les substances qui se secrètent sous la forme de cristaux (cristaux vivants), et s'en rapporte aux fameuses expériences de Driesch sur la régénération. Il y rattache les conceptions de Jordan (Utrecht) -- rapports entre les enchaînements des causes "d'après leur caractère amboceptor"; "le dessein des causes". Les vitalistes portent surtout leur attention sur "la totalité", les mécanistes sur "les parties". Le naturaliste qui se propose uniquement la recherche des causes physico-chimiques des phénomènes physico-chimiques serait parfaitement en droit de se contenter d'une conception mécaniste de la nature. Mais cette conception mécaniste ne suffirait pas à celui qui, comme l'auteur, aspire à comprendre l'organisme dans son ensemble. (shrink)