The creed of a biologist : a biologic philosophy of life / by Aldred Scott Warthin.
- Aldred Scott Warthin
- Date:
- 1930
Licence: In copyright
Credit: The creed of a biologist : a biologic philosophy of life / by Aldred Scott Warthin. Source: Wellcome Collection.
22/80 (page 10)
![releasing energy, but without the power to attain permanent form and to reproduce. Beginning as single, simple cell-forms, adapted to the conditions of the primitive earth, changes in the form and structure of life became necessary as those conditions altered. The simple cell organism gradually became more complicated through the development of specialized parts of its proto- plasm. Differentiation within the single cell resulted in the formation of potential organs, in the form of vacuoles, cilia and flagella. Finally there arose the multi- cellular organism, and with it sexual reproduction came into existence. Through invertebrate, fish, reptilian, amphibian, bird and mammalian forms of life suc- cessively rose the life-structure, to the higher ape-forms and ultimately man, who represents at the present moment the culmination of this evolutionary process, by virtue of the greater complexity of development of his central nervous system. Whether this process of evolution will cease with man we cannot say. What 41 o]°°](https://iiif.wellcomecollection.org/image/b29817808_0022.jp2/full/800%2C/0/default.jpg)
