A UNIT IN AGRICULTURE 35 



number of seed in pod and size and form of single seed. Draw seed 

 pod, using magnifier. Make enlarged drawing of a single seed. 



6. Observe carefully the form, size, number and length of the 

 roots. Look closely for small nodules on the roots. These nodules 

 arc very important and we shall learn more about them later. Make 

 drawing of root. 



Ex. 12. Study of the Irish Potato. 



Material : potatoes, preferably of several varieties, with some 

 showing scab, dry rot, etc. 

 Note the following: 



1. Variety: whether early, medium, or late. 



2. Shape : whether cylindrical, oval, flat oval, compound, regu- 

 lar or irregular. 



3. Size : whether large, medium, small, uniform or not uniform. 



4. Shape of eyes : whether deep, medium or shallow ; oval or nar- 

 row and elongated; large or small (small as compared with size of 

 tuber) ; numerous or few ; uniformly distributed or mainly at bud 

 end; ridge prominent or ridge not prominent. 



5. Color: whether yellowish white, pink or russet. 



6. Texture of skin: whether corky, netted or lenticoled; glossy 

 smooth or dull smooth. 



7. Color of skin : whether yellowish white, russet, red, pink or 

 blue; uniform or not uniform. 



8. General characteristics: whether clean or dirty; cracked or 

 not cracked; if diseased, whether scab, dry rot or blight. 



9. Color of flesh: whether white, yellowish, pink or blue. 

 Make a drawing of the tuber, showing eyes, and indicate which 



is the stem end of the tuber. 



SOILS. 

 Ex. 13. Study of Soil. 



Material : a handful of soil from the school yard. What is the 

 color of this soil ? Are all the particles the same color ? Wet a little 



