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In the History of Animals, Aristotle sets out to investigate the existing facts (Greek "hoti", what), prior to establishing their causes (Greek "dioti", why). [1] [3] The book is thus a defence of his method of investigating zoology. Aristotle investigates four types of differences between animals: differences in particular body parts (Books I ...
[1] Aristotle sets out to "discuss the parts which are useful to animals for their movement from place to place, and consider why each part is of the nature which it is, and why they possess them, and further the differences in the various parts of one and the same animal and in those of animals of different species compared with one another ...
The treaty consists of four books whose authenticity has not been questioned, although its chronology is disputed. The consensus in placing it before the Generation of animals and perhaps later to History of animals. There are indications that Aristotle placed this book at the beginning of his biological works. [1]
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The works of Aristotle, sometimes referred to by modern scholars with the Latin phrase Corpus Aristotelicum, is the collection of Aristotle's works that have survived from antiquity. According to a distinction that originates with Aristotle himself, his writings are divisible into two groups: the " exoteric " and the " esoteric ". [ 1 ]
The history of zoology before Charles Darwin's 1859 theory of evolution traces the organized study of the animal kingdom from ancient to modern times. Although the concept of zoology as a single coherent field arose much later, systematic study of zoology is seen in the works of Aristotle and Galen in the ancient Greco-Roman world .
In the frontispiece of his 1651 book Exercitationes de Generatione Animalium (Essays on the Generation of Animals), he denied spontaneous generation with the motto omnia ex ovo ("everything from eggs"). [23] [37] Illustration of Redi's 1668 experiment to refute spontaneous generation. The ancient beliefs were subjected to testing.
For example, while one of the two principal topics covered in book I is the function of semen (gone, sperma), this account is not finalised until partway through book II. Book I (715a – 731b) Chapter 1 begins with Aristotle claiming to have already addressed the parts of animals, referencing the author's work of the same name.