. Fig. 10. Amallocystis umbi lomere, showing No Studies were made of cytological details of the parasite. A few remarks on the trophomeres and the gonomeres may be given here. In the stained sections the trophomeres have a pink colour, the younger gonomeres may have the same colour or may have become a slightly darker red. The older gonomeres are stained much more deeply, and often show a dark blue colour. In the gonomeres the nuclei appear to be more or less evenly distributed throughout the whole organ. In the tropho- meres, however, there is a distinct difference between the proximal part a
. Fig. 10. Amallocystis umbi lomere, showing No Studies were made of cytological details of the parasite. A few remarks on the trophomeres and the gonomeres may be given here. In the stained sections the trophomeres have a pink colour, the younger gonomeres may have the same colour or may have become a slightly darker red. The older gonomeres are stained much more deeply, and often show a dark blue colour. In the gonomeres the nuclei appear to be more or less evenly distributed throughout the whole organ. In the tropho- meres, however, there is a distinct difference between the proximal part and the distal region. In the proximal part the nuclei are arranged in groups so as to form clusters that with their greater diameter are more or less parallel to the longitudinal axis of the trophomere. This occurs in about the whole of the proximal third part of the trophomere. In a more distal region the groups of nuclei become more mdistinct, and finally the nuclei become more or less evenly distributed in the trophomere. The region of transition of the groups of nuclei into a rather uniformly scattered mass of nuclei is shown for one of the trophomeres in Fig. lo. It appears as if in the proximal region of the trophomeres the nuclei are found on more or less parallel strands of tissue, whilst they do not occur in the intervening spaces. The phenomenon referred to here is to be observed in all the trophomeres of the series of sections.
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
