68 COMPANION TO TROPICAL READERS 



Expt. 131. Vegetable Manures improve the Tex- 

 ture of a Clayey Soil. Get some clay and powder it, 

 divide it into two parts, mix one-half with some stable 

 manure, and put the lots into two tins with holes 

 bored at the bottom. Put these over two glasses and 

 pour into each an equal quantity of water. Observe 

 that the water passes more readily through the clay 

 that is mixed with manure. 



Expt. 132. Vegetable Matter makes Sand Less 

 Porous. Try an experiment similar to the one above, 

 using sand instead of clay, and observe that the mixture 

 of sand and stable manure is less porous than the pure 

 sand. 



CLIMATE AND PLANT LIFE 



(See Tropical Readers, Book II, pp. 101-103.) 



Expt. 133. Crops of the World. Make a blank map 

 of the world, putting in the more important crops grown 

 in the different countries. 



Expt. 134. Crops of Jamaica. Make a map of 

 Jamaica, showing the districts in which coffee, sugar 

 cane, ginger, and bananas are principally grown. 



Expt. 135. Study of Plants in District around 

 School. Draw a map of the country surrounding the 

 school for about 4 miles. Fill in different types of 

 plants that may be seen. 



Expt. 136. Plants on the Hills and on the Plains. 

 Record any differences that you have noticed between 

 the plants growing on the hills and those on the plains 

 known to you. 



Expt. 137. Plant Societies. Collect specimens of 

 plants characteristic of 



(a) The seashore. (c) The roadsides. 



(b) Inland swamps and marshes. (d) Pastures. 



