Science Primers. INTRODUCTORY. BY PROFESSOR HUXLEY, F.R.S. =Toronto:= CANADA PUBLISHING CO., (LIMITED.) _Entered according to the Act of the Parliament of Canada, in the year One Thousand Eight Hundred and Eighty-one by_ MACMILLAN & CO., LONDON, _in the Office of the Minister of Agriculture_. TABLE OF CONTENTS. PART. SECT. I. NATURE AND SCIENCE. PAGE 1. 〃 Sensations and Things 5 2. 〃 Causes and Effects 5 3. 〃 The reason Why. Explanation 6 4. 〃 Properties and Powers 7 5. 〃 Artificial and Natural Objects. Nature 8 6. 〃 Artificial Things are only Natural Things shaped and brought together or separated by Men 8 7. 〃 Many Objects and Chains of Causes and Effects in Nature are out of our reach 10 8. 〃 The Order of Nature: nothing happens by Accident, and there is no such thing as Chance 10 9. 〃 Laws of Nature; Laws are not Causes 12 10. 〃 Knowledge of Nature is the Guide of Practical Conduct 14 11. 〃 Science: The Knowledge of the Laws of Nature obtained by Observation, Experiment, and Reasoning 16 II. MATERIAL OBJECTS.—(A.) MINERAL BODIES. 12. 〃 The Natural Object Water 19 13. 〃 A Tumbler of Water 20 14. 〃 Water occupies Space; it offers Resistance; it has Weight; and is able to transfer Motion which it has acquired; it is therefore a form of Matter 20 15. 〃 Water is a liquid 21 16. 〃 Water is almost incompressible 22 17. 〃 The meaning of Weight 24 18. 〃 Gravity and Gravitation 25 19. 〃 The cause of Weight: Attraction: Force 27 20. 〃 The Weight of Water is Proportioned to its Bulk 28 21. 〃 The Measuring of Weights. The Balance 29 22. 〃 The Weight of the same Bulk or Volume of Water is Constant under the same conditions. Mass. Density 30