VIEWPOINTS OF SCIENCE 15 



the disease. Then they hunted about for another probable cause. 

 Due to carefully controlled experiments, doctors were able to 

 demonstrate that malaria was caused by a definite microorganism 

 which was carried by a certain species of mosquito. Once this had 

 been demonstrated, the prevention, treatment, and cure of the 

 disease followed. Certain towns along the Canal Zone, for many 

 years infested with both malaria and yellow fever, have now become 

 health resorts. The carrier of the germ has been exterminated and 

 the disease is now under almost complete control. 



Modern experimentation solves problems under controlled con- 

 ditions. The aim of the problem must be kept in mind, the method 

 of procedure must be decided upon, and all conditions carefully 

 regulated. All possible data must be painstakingly collected and 

 arranged in an orderly manner. Judgment must be suspended 

 until all the evidence has been properly weighed. All observa- 

 tions should lead to a logical conclusion which will give information 

 about the problem to be solved, if it does not actually solve it. 

 Such scientific observation leads to straight thinking. Science is 

 now becoming a philosophy of education rather than simply a 

 method, and is applicable to all problems of life. 



Viewpoints of science. Human knowledge may be divided into 

 the arts and the sciences. Science is careful, exact, orderly 

 arranged knowledge. Among the many sciences are chemistry, 

 physics, and biology. Biology is that branch of science that deals 

 with living things or things that have been alive. The word 

 biology comes from two Greek words, bios — life ; logos — study. 



In studying this earth on which we live, and the living things 

 that are found on our globe, the different scientists may each look at 

 the things about them from different points of view and use differ- 

 ent units upon which to build their sciences. In physics, the 

 scientist may separate a board into small chips or into sawdust, 

 and divide it further into smaller and smaller particles, finally, 

 reducing it to the smallest possible particle and still have the 



