The microscopic organisms found in the blood of man and animals, and their relation to disease / By Timothy Richards Lewis.
- Timothy Richards Lewis
- Date:
- 1879
Licence: Public Domain Mark
Credit: The microscopic organisms found in the blood of man and animals, and their relation to disease / By Timothy Richards Lewis. Source: Wellcome Collection.
Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.
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![li, seen. The notes run as follows:—' Killed two mice yesterday and exam- s' ined one of them to-day, 24 hours after death. 'Cultivation' of small bacilli— y arst day: ijjkg red blood-cells from blood taken from the heart fairly well preserved. Numerous short bacilli present—motionless. The spleen also crowded with similar bacilli. They appear to be of a smaller size than are usually met with, the segments averaging only 2,5i«. in length by • 8 to lju. in breadth; though, in many of the rods, indications of segmentation could not be detected, or detected only in parts of them. The segments became more evident on drying, so that measurements could be accurately made. The sketch opposite page 41 has been drawn accurately to scale (vide Plate I, figure 6). A drop of aqueous humor was placed on a cover-glass and a needle dipped into the spleen, and then applied to the droplet of humor. The cover was inverted and placed on a glass slide, hollowed in the centre, a little olive oil having been placed along the rim of the hollow to maintain the cover in its position. Another specimen was prepared and mounted on a slide in the ordinary way (*. <?., without access to air except along the edge of the cover-glass), and both were set aside until the following day.' The course taken by the latter preparation is described as follows: (The ordinary preparation of yesterday's note was second day: found to have altered somewhat. At one side of the slide a number of bacterium termo had developed, forming a whitish rim ; along with these were staves of the same character as described yestesday, but considerably grown, which were being knocked about in all directions by the bacteria. The greater portion of the preparation had gone on to spore form- ation, as figured at a, Plate I, figure 7. In others the filaments and joints were still distinct and presented a protoplasmic aspect (b). Many of the filaments were held together by very slender cords, sometimes as if by one corner only, probably owing to a twisting of the tube ; at others the continuation of the tube was distinct (c). [Compare this description with the figures of bacillus anthracis reproduced from Dr. Cossar Ewart's paper, figures 8 and 9.] Here and there filaments could be seen in a transition stage, a spore having formed in each segment, the joint being still faintly visible, but the plasma disappeared except at one or two parts—generally the end-segments of a thread (d). Commonly the separated segments contained two spores,](https://iiif.wellcomecollection.org/image/b2136414x_0055.jp2/full/800%2C/0/default.jpg)
