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Updated: May 19, 2025
By the end of May, although the plumage is unchanged, the testes have diminished to the size of a haricot bean, and spermatogenesis has ceased. They diminish still further during June, July, and August, and acquire a yellow or brownish colour, while microscopically there is no sign of activity in the spermatic cells.
I have recovered them from the dead man's blood and have studied them microscopically. They can be definitely recognized. This is plainly a case of aconite poisoning probably suggested to the Oriental mind by the poison arrows of the Ainus of Northern Japan." Dr.
The brain was described grossly as normal: but microscopically there was marked superficial gliosis in all areas examined and considerable cell loss in suprastellate layers of precentral cortex. The calcarine sections show little or no cell-loss. This shows little cell-loss except in the layer of medium-sized pyramids. Always of a retiring and shy disposition.
Finally, if we examine microscopically a proofed fibre which has been dyed, or which we have attempted to dye, with logwood black, we find that the fibre presents an appearance similar to that of rope which has been drawn through some black pigment or black mud, and then dried. It is quite plain that no lustrous appearance or good "finish" can be expected from such material.
When this form is drawn by the pendulum, the pattern is not in any way intentionally produced, but simply comes as a consequence of the crossing of the innumerable microscopically fine lines. The Threefold Manifestation.
The fertility of these lower animals is truly amazing, and is no doubt a provision of Nature against the many chances of destruction to which these germs, so delicate and often microscopically small, must be exposed. The higher we rise in the Animal Kingdom, the more limited do we find the number of progeny, and the care bestowed upon them by the parents is in proportion to this diminution.
Precisely the reverse has taken place in the passage of most granite aggregates from a fluid to a solid state, crystals of the more fusible minerals being found enveloped in hard, transparent, glassy quartz, which has often taken very faithful casts of each, so as to preserve even the microscopically minute striations on the surface of prisms of tourmaline.
The light that streams through a pin-prick is the same that pours through the widest window. The crystals of a salt present the same facets, flashing back the sun at the same angles, whether they be large or microscopically small.
His face, too, had something of the student in it, and this effect was increased by a pair of large gold spectacles with double lenses. The man's contracted eyes gave the youth the uncomfortable feeling of being microscopically examined, and Ned was for a moment ill at ease. The manner of the scrutiny was that of a scholar who had before him a strange new specimen.
It is obvious, and it is also thoroughly justifiable, that all attempts along these lines of interpretation should be undertaken in the first place in connection with the simplest and lowest forms of life. It is in the investigation of the “Protists,” the study of the vital phenomena of the microscopically minute unicellular organisms, that attempts of this kind have been most frequently made.
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