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But this explanation is at once shown to be untenable when the smaller and the larger sacs are proved to be spores or sporangia.
But this explanation is at once shown to be untenable when the smaller and the larger sacs are proved to be spores or sporangia.
Some of the contents of the right nostril were blown on a slide, covered, and examined morphologically. Several oval bodies, round algae, were found with the characteristics of G. verdans and rubra. Also some colorless sporangia, and spores abundantly present. These were in addition to the normal morphological elements found in the excretions. Observation 27.
I saw you take the sputa of a ague patient and demonstrate the spores and sporangia of the Gemiasma verdans. 3d. You said it was not common to find the full development in the urine of such cases, but only in the urine of the old severe cases. This was a mild case. 4th.
Under favorable conditions, that is, with moisture, heat, and the presence of vegetable matter in decomposition, the filaments of mycelium increase in length. From these long filaments springs the fungus. With a linear magnitude of 480, the sporangia have a transverse diameter of one to five millimeters, or a little more in the larger specimens.
White incrustation. Many minute algae, but two sporangia of a pale pink color; another variety of color of gemiasma. Innumerable mobile spores. Observation 10. Gemiasma verdans and G. rubra in small quantities. Innumerable mobile spores. Observation 11. Specimen taken from under the shade of short marsh grass. Gemiasma exceedingly rich and beautiful. Innumerable mobile spores. Observation 12.
Under a microscope, a piece of such coal is seen to be thronged with the minute rounded bodies of the spores interlacing one another and forming almost the whole mass, whilst larger than these, and often indeed enclosing them, are flattened bag-like bodies which are none other than the compressed sporangia which contained the former. Lycopodites.
Mine host with whom I lodged had a microscopical mount of the Protococcus nivalis in excellent state of preservation. The sporangia were very red and beautiful, but they showed no double cell wall. In this locality ague is unknown; indeed, the place is one of unusual salubrity. It is interesting to note here to show how some of the algae are diffused.
The slides were moistened, one was laid on a stone, one on a clod, and a third on the grass. Returned to bed, not having been gone over ten minutes. At 6 A.M. collected and examined for specimens the drops of dew deposited. Results: In every one of the five instances collected the automobile spores, and the sporangia of the gemiasmas and the protuberans on both sides of slides and beaker.
Thus, the singular conclusion is forced upon us, that the greater and the smaller sacs of the "Better-Bed" and other coals, in which the primitive structure is well preserved, are simply the sporangia and spores of certain plants, many of which were closely allied to the existing club-mosses.
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