244 



- GENERAL SCIENCE 



of its root system breaks off and is left in the ground. The 

 root-hairs are found just back of the growing ends of the 

 roots. They are it may be but an eighth of an inch or less 

 in length, and are merely elongated cells of the outer covering 

 of the rootlets. They never become roots but disappear as 

 the rootlet grows older and forms a thicker outer coat or 

 bark. 



FIG. 79. The young gardener. 



All labor and painstaking on the part of a gardener may 

 come to naught by reason of unfavorable weather and bad 

 seasons for growth. In dry summer weather, when it 

 becomes necessary to water the garden and lawn, it is better 

 generally to thoroughly soak the portion where any water 

 at all is applied, and not to repeat until the ground has again 

 become dry to the depth of about three inches. The deeper 



