NOTE TO TEACHERS 



IN addition to what has been said in the general preface 

 concerning the purpose of Part II, the attention of the 

 teacher should be called to a few practical suggestions. 



Such a subject as plants in cultivation must include a 

 much wider range of plants than those commonly recognized 

 as producing " crops." It must include not only the products 

 of agriculture, but also the plants that enter conspicuously 

 into our experience, either as plants (cultivated flowers) or 

 as plant products (lumber and fibers). This more extensive 

 contact with the commercially important plants not only 

 gives a more adequate conception of the uses of plants, but 

 also makes it possible to supplement the relatively poor 

 facilities for agricultural operations in connection with city 

 schools, by the exceptional facilities of city schools to observe 

 a wide range of plant products in the city markets. 



It will be of very great service for the teacher to apply 

 to the Agricultural Experiment Station of the state for ma- 

 terial and for information. A great number of bulletins are 

 published by the stations, dealing with the conspicuous 

 crops of the state, and giving suggestions as to their cultiva- 

 tion. By means of these bulletins, a more intensive study 

 of the state crops can be made than is suggested by the book, 

 which cannot emphasize all the crops of all the states, but 

 which suggests how to begin their study. 



In addition to state bulletins and local information, some 

 standard works of reference should be available, which can 

 be consulted for fuller details than any text-book can give. 

 A very useful work of this kind is BAILEY'S Cyclopedia of 

 American Horticulture (4 vols.), which contains all the infor- 

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