Downing] PROGRESS IN MEASURING RESULTS 69 



Water is absorbed by the plant from the soil largely by means of 



the root The water is brought up from the deeper 



layers of the soil by much as oil is 



brought up to the flame by the lamp wick. The 



the spaces between the soil particles the more readily is the water 

 brought up. Evaporation goes on rapidly if the surface layer of 



soil is , slowly if it is For this reason 



in part the garden is so as to prevent excessive 



In wet seasons it would be unwise to do this for 



if the surface layer is rain will easily 



the soil and would also be checked. 



It has been shown that pollination produces more 



and better seed than self pollination in flowers. Pollen is carried 



from flower to flower either by or by 



Flowers of the former sort are called anemophilous of the latter 



Willows and grasses have their pollen carried 



largely by and the pollen is produced in great 



Flowers that depend on to carry 



their pollen usually have pleasing bright 



and secrete to attract the Their 



form and structure are often to the structure of some 



one sort of Thus flowers with deep tubular corollas 



are visited by that have a very long to 



enable them to reach the 



An animal breathes (Check the best reason given) . 



1 . Because the blood contains impurities that must be eliminated. 



2 . In order to get oxygen to the working cells so it may be com- 

 bined with their substance to generate work power and in order to 

 remove the wastes. 



3 . To keep the lungs healthy. 



4. To destroy disease germs. 



5. So the animal will have air enough to make noises that are 

 characteristic of each species, like the song of a bird, the moo of a 

 cow. 



A person should wash his hands before each meal because (Check 

 the best reason): 



1 . It is not polite to come to the table with dirty hands. 



2. It helps the grocer to sell his soap. 



3. The skin is not healthy unless it is washed often. 



4. Disease germs might get from your hands onto your food. 



