Instinct and reason, philosophically investigated : with a view to ascertain the principles of the science of education / by Thomas Jarrold, M.D.

  • Jarrold, T. (Thomas), 1770-1853.
Date:
1736 [i.e. 1836]
Catalogue details

Licence: Public Domain Mark

Credit: Instinct and reason, philosophically investigated : with a view to ascertain the principles of the science of education / by Thomas Jarrold, M.D. Source: Wellcome Collection.

Provider: This material has been provided by University of Bristol Library. The original may be consulted at University of Bristol Library.

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    there is an increase of all the earth's productions (beginning with the grasses;) no field in science opens a prospect so l)rilliant or so beneficial as this which Professor Ehrenberg, and other Philosophers, have opened to our contemplation . In it new and vast discoveries in the sciences, in the atmosphere, in the knowledge of disease, and in agriculture and the arts, invite attention with assured success. They also open, in natural history, a subject of the highest importance, that of Spontaneous generation. It is an established fiict, that most animals are annoyed by, and sometimes become the victims of. Parasites, which infest the skin and the intestines, and are pro- per to the animals on whom they are found, and exist no where besides. Those that infest man are not found in beasts. The worms of every animal may rank under one genus, but the species differ : some of them multiply according to the ordinary course of nature, but how they obtained their first lodgment in the body is difficult of solution,-—others are never found in a state of growth, but always of a full size, and are not known to propagate ; some exist in the bladder, others in the liver, some make their way from below the skin—Dr. Heberden witnessed such a case. Besides animals, vegetables are subject to a like spontaneous exhibition of life—some of the fungus tribe appear in the decay of wood, in a way inexpli- cable, but on the principle of their having previously existed in the tree, and that disease had given rise to an assemblage of living atoms, so as to constitute a given form; and it may not be impossible that dis- ease in animals may have given rise to assemblages