. The structure and development of mosses and ferns (Archegoniatae). s not so large asis usually the case in cells of similar character, and, except thenucleolus, stains but slightly with the ordinary nuclear the fresh state these spore mother cells are absolutely opaque,owing to the great amount of granular matter, largely drops ofoil, that they contain. In embedding these in paraffine,however, the oil is dissolved and removed, and microtomesections show the fine granules of the cytoplasm arranged in anet-like pattern, the spaces between probably being occupiedby oil in the living c
. The structure and development of mosses and ferns (Archegoniatae). s not so large asis usually the case in cells of similar character, and, except thenucleolus, stains but slightly with the ordinary nuclear the fresh state these spore mother cells are absolutely opaque,owing to the great amount of granular matter, largely drops ofoil, that they contain. In embedding these in paraffine,however, the oil is dissolved and removed, and microtomesections show the fine granules of the cytoplasm arranged in anet-like pattern, the spaces between probably being occupiedby oil in the living cells. II MUSCINE^—HEPATIC^—MARCH ANTI ALES 35 Fig. 7, A shows the nucleus of the mother cell under-going the first division. The small size of the nuclei, and thesmall amount of chromation in them, make the study of thedetails of the nuclear division difficult here, and as there wasnothing to indicate any special peculiarities these were notfollowed out. After the first nuclear division the daughternuclei divide again, after which the four nuclei arrange them-. c.
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Keywords: ., bookauthorcampbelldouglashought, bookcentury1900, bookdecade1910
