Essays on the Microscope: Containing a Practical Description of the Most Improved Microscopes, a General History of Insects, etc., etc.Adams, George
Science
Essays on the Microscope: Containing a Practical Description of the Most Improved Microscopes, a General History of Insects, etc., etc.
Adams, George
Insects -- Early works to 1800; Microscopy -- Early works to 1800
Montaigne remarks, that there is a certain claim of kindness and
benevolence which every species of creatures has a right to, from us.
It is to be regretted, that this general maxim is not more attended to
in the affairs of education, and pressed home upon tender minds in its
full extent and latitude; the early delight which children discover in
tormenting different animals should by all possible means be
discouraged, as, by being unrestrained in such sports, they may at
least acquire a habit of confirmed inattention to every kind of
suffering but their own, if not progressively be led to the
perpetration of more atrocious acts of cruelty. The supreme court of
judicature at Athens thought an instance of this sort not below its
cognizance, and punished a boy for putting out the eyes of a poor bird
that had unhappily fallen into his hands; and the inimitable HOGARTH,
“the great painter of mankind,” has in his “Five Stages of Cruelty,”
admirably depicted the consequences which may result from an early
indulgence of a propensity towards cruelty.
In order to awaken as early as possible in the minds of children an
extensive sense of humanity, it might be prudent to indulge them with
a view of several sorts of insects as magnified by the microscope, and
to explain to them that the same marks of divine wisdom prevail in the
formation of the minutest insect, as in the most enormous leviathan;
that they are equally furnished with whatever is necessary, not only
for the preservation, but the happiness of their beings, in that class
of existence which Providence has assigned them: in a word, that the
whole construction of their respective organs distinctly and
decisively, proclaims them the objects of divine benevolence, and
therefore they justly ought to be so of ours. EDIT.
OF ANIMALCULA IN INFUSIONS, &C.
These require little or no preparation. The first object is to procure
them, the second, to render them visible by the microscope. A few
observations, however, may be of use. Many drops of water may be
examined before any can be found; so that if the observer be too hasty,
he may be easily disappointed, though other parts of the same water may
be fully peopled by them.
The surface of infused liquors is generally covered with a thin
pellicle, which is easily broken, but acquires thickness by standing;
the greatest number of animalcula are generally to be found in this
superficial film.
In some cases it is necessary to dilute the infusions; but this is
always to be done with distilled water, and that water should be
examined in the microscope before it is made use of: the neglect of this
precaution has been a source of many errors.
Public-domain text, read in full here on John Shaqi.
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