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THE MICROSCOPE AND ITS LESSONS. 



The mystery of growth ! We live in a world sur- 

 rounded with mystery. Who can tell me how it is that 

 I can keep up the circulation in the tiny leaf of a weed 

 for three weeks after I have torn it from its branch ? 

 Anxious to know something of this mystery, I applied 



" Smut " oil maize (Vredo segetam), greatly magnified. 



recently to a scientific friend of one of the profoundest 

 naturalists of to-day ; but mark the answer I received : 

 " He can't tell you ; he doesn't know himself." A willow 

 weighing five pounds was put into two hundred pounds of 

 dried earth a few years ago and kept watered, but covered 



