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Morphogenesis and metabolism of the gametophytes (= sporelings) of the common male fern Dryopteris filix-mas are controlled by visible radiation. Short wavelengths visible radiation (= blue light) leads to an increase in protein synthesis and makes possible the formation of "normal" two-dimensional prothallia. Under long wavelengths visible radiation (= red light) the sporelings grow as cellular filaments the protein contents of which are markedly lower than under blue irradiation even under conditions of equal rate of dry matter accumulation in red and blue (OHLENROTH and MOHR, 1963). - It is shown in the present paper that the RNA content of sporelings of the same age is always higher in blue light than in red light (Figs. 1, 3). The blue-dependent increase of RNA occurs faster than the blue-dependent increase of protein (Fig. 2). Furthermore the increase of protein per sporeling is much larger than the increase of RNA (Fig. 4). These facts are in agreement with the hypothesis that in some way or another blue light initiates differential gene activation.The blue light-dependent morphological changes which occur if we put red grown filamentous sporelings under blue light can be measured much faster than the blue light-dependent increase of the bulk protein (Figs. 5, 6). We have to conclude as we did in a previous paper (KASEMIR and MOHR, 1965) that the blue light-dependent increase in the protein content of the sporelings might be mainly due to an increase of chloroplast protein. - The blue light-dependent increase of the RNA content occurs at least as fast as the morphological changes (Figs. 5, 6). This finding is supplemented by the observation (Fig. 8) that blue light markedly and rapidly stimulates the incorporation of (14)C into RNA. The (14)C was applied as (14)C-uridine (U). - It seems that blue light causes an increase of protein synthesis in the chloroplasts as well as in the cytoplasm. Blue light-dependent RNA synthesis seems to be involved in this response. These data support the view that blue light might exert its morphogenetic control through differential gene activation.

The aim of this paper is to analyze the impact of two important factors in the process of the constitutional organization of Serbia and Romania during the 19th century: the external factors and internal socio-political circumstances. Therefore, the constitutional models, modes and types of implementation are an important part of this work. Using analytical and comparative methods, I will discuss the similarities and differences in the processes of constitutionalization in one part of the Balkans region.

There are various doubts and ambiguities regarding the dispatch of the memorandum by the Government of the Independent State of Croatia (ISC) to the Western Allies asking for military intervention in early May 1945, giving rise to different interpretations in historiography. These varying interpretations are related to the circumstances of the dispatch of the memorandum, its text, the actions of prominent representatives of the Ustasha government, relations between the new Yugoslav authorities and Western allies, especially the British and the role of Archbishop Stepinac and the Holy See in the ISC. In order to understand the memorandum, it is necessary to consider the most important political and military circumstances at the end of World War II in Yugoslavia, especially the politics of the new Yugoslavia and the Western powers, primarily the British. The representatives of the Holy See in the ISC and the Archbishop of Zagreb, Alojzije Stepinac, played an important role in efforts to preserve the Ustasha state. This paper was written based on unpublished and published archival sources and relevant historiographical literature.

Morphogenesis and metabolism of the sporelings (= young gametophytes) of the common male fern Dryopteris filix-max are controlled by visible radiation. Short wavelengths visible radiation (= blue light) leads to an increase in protein synthesis and makes possible the formation of "normal" two-dimensional prothallia. Under long wavelengths visible radiation (= red light) the sporelings grow as cellular filaments, the protein contents of which are markedly lower than under blue light even under conditions of equal rate of dry matter accumulation in red and blue light (Fig. 2). - Quantitative amino acid analysis of the total protein of blue and red grown sporelings did not reveal any striking difference. The contents of all those amino acids which can be measured quantitatively after protein hydrolysis show about the same increase under the influence of blue light (Figs. 3, 4). Only in the case of proline are the differences between red grown and blue grown sporelings indicative of a qualitative change in the nature of the protein fraction (Fig. 3/h). -The pools of the free amino acids are always smaller in blue grown sporelings than in red grown ones (Figs. 6, 7). - The facts reported in this paper indicate that blue light leads mainly to a quantitative increase in the rate of protein synthesis. The influence of blue light on the qualitative nature of the protein fraction seems to be slight. On the other hand, the data on the pool sizes of the free amino acids support the conclusion that blue light controls the rate of protein synthesis at the stage of polypeptide synthesis and not through amino acid synthesis.