264 Education through Nature 



6. Structure of Stems 



1. Woody (exogenous) 



2. Pithy (endogenous) 



3. Herbaceous 



4. Hollow or porous 



5. Fleshy 



6. Scaly 



f i. Annual 



7. Duration of Stems \ 2. Biennial 

 [ 3. Perennial 



8. Growth of Stems 



1. Exogenous 



2. Endogenous 



3. Definite annual growth 



. 4. Indefinite annual growth 



USES OF THE STEM. 



9. Uses of Stems to 



i. Plants 



2. Animals 



1. Conduction of sap 



2. Storage of food 



3. Support of leaves 



4. Protection 



5. Support of other plants 

 .6. Reproduction 



' i. Larvae 



2. Ants 



3. Birds 



4. Toads 



5. Snakes 

 .6. Monkeys 



2. Food 



3. Protection and shelter 



' i. Homes of 



3. Man 



1. Food 



2. Medicines 



3. Building material 



4. Fodder 



5. Manufacture of 



6. Fibers for manu- 



factures 



7. Bark for tanning 



1. Lumber 



2. Furniture 



3. Tools 



4. Sugar 



5. Starch 



6. Paper 



7. Rubber 



8. Dyes 



9. Linen goods 



. 8. Bark for Indian canoes, etc. 



