Category: Science - Biology
Many persons seem to believe that what is termed Science is of a widely different nature from ordinary knowledge, and that the methods by which scientific truths are ascertained involve mental operations of a recondite and mysterious nature, comprehensible only by the initiate...
So far as I have been able to discover, all the crayfishes which inhabit the British islands agree in every point with the full description given above, at p. 230. They are abun...
9. CHAPTER IV.In the two preceding chapters the crayfish has been studied from the point of view of the physiologist, who, regarding an animal as a mechanism, endeavours to discover how it do...
10. CHAPTER V.Up to this point, our attention has been directed almost exclusively to the common English crayfish. Except in so far as the crayfish is dependent for its maintenance upon other...
8. CHAPTER III.If the hand is brought near a vigorous crayfish, free to move in a large vessel of water, it will generally give a vigorous flap with its tail, and dart backwards out of reach;...
6. CHAPTER I.Many persons seem to believe that what is termed Science is of a widely different nature from ordinary knowledge, and that the methods by which scientific truths are ascertained...
7. CHAPTER II.An analysis of such a sketch of the “Natural History of the Crayfish” as is given in the preceding chapter, shows that it provides brief and general answers to three questions....
5. CHAPTER VI.1. CHAPTER II.2. CHAPTER III.4. CHAPTER V.3. CHAPTER IV.