Elements of Agriculture 



PART L-Climatb 



CHAPTER I.— Sunlight 



1. Sunlight the Source of all Life.— Sunlight, water 

 and air, all three so important to our health and happi- 

 ness, are equally necessary to the health and growth of 

 plants. Children raised in the foul, dark slums of a 

 city are apt to be sickly both in mind and body. The 

 strongest alone survive, and they too often grow up as 

 full of evil ;is tin ir surroundings. Poor children ! Their 

 lives arc spent between the dull brick walls of the city, 

 with seldom a glimpse of the country with its glorious 

 sunlight, it- birds and its i! How can they grow 



up to I"' perfect men and women? No more can the 

 little plant straggling along in some dark corner grow 

 up to its full beauty and power. 



The light and heat whirli us from the sun in 



the form of sunshine I . • rv child should know, 



in.s of all life on this earth; henee to sunshine 

 agriculture ow tence, Rut little is yet 



known of this quickener of life. It is known that sun- 

 shine produces both heat and light, and that the two 

 may be separated, but much remains to be discovered in 

 regard to it; and men now unknown may make their 

 names immortal by telling the world more about it. 



