H V usoN ] OA' a A NIC FIKL D OF A' A TURE- S TCJD V 135 



are other essentials which we may cultivate: — essentials to good 

 citizenship, to broader knowledge, to finer personal character, 

 and to success in life. These things must hold our attention 

 yet in the building we may gain an earlier, deeper, and more 

 abiding love of nature which shall also include his fellow man. 



The tables outline only the organic field of nature-study, 

 but the author does not mean to exclude the inorganic from 

 practice. The development of man's tools takes us from bone or 

 stone to bronze and steel. The first artificial source of warmth 

 and light was from burning woods or oils, — now the source is from 

 coal or electricity. The ox was at first one of the greatest 

 sources of power, but the modern locomotive is the mightier. 

 The inorganic enters the field of medicine, produces dye stuffs 

 and flavors, and may yet enter the realm of foods. The study of 

 minerals and of physical phenomena must have a share of the 

 time devoted to our work; and they must not be treated as 

 aliens but as closely related essentials. 



The tables are far from complete. While the relation of 

 plants to food-supply is treated at first as a matter of plant 

 parts, it should be treated later from the standpoint of plant 

 orders or plant families. It is hoped, however, that the table 

 will be helpful in many ways, by suggesting material for study, 

 the breadth of the field, the historical element, order of pre- 

 sentation, relative values, and final aim or purpose. 



