TABLE OF CONTENTS. 



Page. 



PREFACE, 3 



LETTER OF TRANSMITTAL, 7 



FIRST GRADE, 9 



SECOND GRADE, 16 



THIRD GRADE, 24 



FOURTH GRADE, 31 



FIFTH GRADE, 38 



Insects, 51 



Place of insects in animal kingdom, 53 



. Parts of insects, 53 



Injurious insects, 55 



Some of nature's insecticides, 57 



OUTLINE FOR TREE STUDY FOR ALL GRADES, 58 



Outline for tree description, 60 



Forms of tree description, 61 



Drawings, 61 



OUTLINE FOR DETERMINING MINERALS, 67 



GERMINATION OF SEEDS, 69 



SIXTH GRADE, 70 



Osmosis, 70 



Transportation of moisture, 71 



Path of liquids in plants, 72 



Carbon food of plants, 72 



Respiration of plants, 72 



Growth of plants, 73 



Irritability, 73 



Birds, 74 



Minerals, 80 



Physics, 83 



Heat, 85 



SEVENTH GRADE, 88 



Formation of coal, 93 



Mineral oil and gas 94 



Glacial period, 94 



Sun, 96 



Light, .' 97 



Sounds in nature, 98 



EIGHTH GRADE, 101 



The home 101 



Spring work 109 



Care of garden, Ill 



PICTURES SUGGESTED FOR USE IN SCHOOLS, Ill 



STATUARY 11G 



A IM'ARATUS, 117 



(1) 



166446 



