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Updated: June 18, 2025
J.D. Hardy devised an instrument, which he has named a chromatoscope, so easily made by any one who has a spot lens that we take the following description from the Journal of the Royal Microscopical Society: "Its chief purpose is that of illuminating and defining objects which are nonpolarizable, in a similar manner to that in which the polariscope defines polarizable objects.
The ferns of the Carboniferous period are generally without organs of fructification, but in the few instances in which these do occur in a fit state for microscopical investigations they agree with those of the living ferns.
Congested brain and lungs; redness of the mucous membrane of the stomach. The stomach and intestines should be examined for fragments of the leaves and fruit, recognized by their microscopical appearances. Treatment. Emetics, tannic acid or gallic acid. Diffusible stimulants. Method of Extraction from the Stomach. Use Stas-Otto process. Tests. The mousy odour.
Oh, please, Professor Scarab, have I got to fall on your neck again to introduce a little human companionship into this conversation?" "Caesar! No! My shoulder's still lame. What do you want, anyway?" "I want to know about you and your work. ALL about you." "Humph! Well, at present I'm making some microscopical studies of insects. That's the reason for these glasses.
If these simple proceedings are not sufficient to restore the infant's health, it will be wise to seek at once for another source of milk supply, and to place the suspected milk in the hands of the medical officer of health or of the public analyst, in order that it may be submitted to a thorough chemical and microscopical examination.
Thus, fermentation, in so far as it was accompanied by the development of microscopical organisms in enormous numbers, became assimilated to the decomposition of an infusion of ordinary animal or vegetable matter; and it was an obvious suggestion that the organisms were, in some way or other, the causes both of fermentation and of putrefaction.
To denude a tree of its foliage three years in succession usually proves fatal. The vitality of the tree declines year by year till death ensues. To me nothing else about a tree is so remarkable as the extreme delicacy of the mechanism by which it grows and lives, the fine hairlike rootlets at the bottom and the microscopical cells of the leaves at the top.
These particles during subsidence become attached to the almost microscopical organic impurities present in all river water, and drag them down to the bottom of the settling tank, whereby the water is rendered, after some eight hours, clear as crystal. The average cost of the water supplied by the leading metropolitan water companies is L10 10s. 93/4d. per million gallons.
Meantime another stage of the developmental history of organic things this time a microscopical detail regarding the cell divisions of certain plants has been studied by Professor Mottier, of Indiana; while another American botanist, Professor Swingle, of the Smithsonian Institution, has been going so far afield from marine subjects as to investigate the very practical subject of the fertilization of figs as practised by the agriculturists about Naples.
In scarcely one of these particulars can a man make two letters so much alike that they cannot be distinguished by microscopical examination. This sleeve may be pushed out for one or two centimeters, and the particular spot under examination isolated from the adjacent parts without undue magnification.
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