Published by Samuel Huckins on 26 Jul 2007
Notes on “Zoological Philosophy”
Notes on Zoological Philosophy, by J.B. Lamarck-
Chapter 7-
- Concerning the influence exerted by the environment on the various living bodies exposed to it. It is in all times and places operative on living bodies.
- The state in which we find any animal is, on the one hand, the result of the increasing complexity of organisation tending to form a regular gradation; and, on the other hand, of the influence of a multitude of very various conditions ever tending to destroy the regularity in the gradation of the increasing complexity of organisation.
- It is only by an inspection of ancient monuments that he becomes convinced that in each of these localities the order of things which he now finds has not always been existent; he may thence infer that it will go on changing.
- First Law of Nature:
- In animals not past the limit of development, more use of an organ strengthens and develops that organ, while disuse weakens the organ until it disappears.
- Second Law of Nature:
- All acquisitions or losses wrought by nature on individuals are preserved by reproduction to the new individuals which arise.