144 ALFALFA FARMING IN AMERICA. 
Common farm lands do not pay well. Invest in 
limestone, manure, phosphorus, alfalfa seed, make 
over that $75 land into $250 land and farming wiil 
pay you. 
Visiting a Stone Quarry—A visit to a limestone 
quarry is an interesting thing. These thoughts 
came one day to the writer as he strolled with a 
company of Ohio State University agricultural stu- 
dents beside the quarries at Columbus, Ohio. A 
great mass of limestone rock rises to within a few 
feet of the surface of the soil. Here the Scioto 
river, cutting its way through, has eroded a chan- 
nel, exposing cliffs of limestone; here have come 
quarrymen seeking to mine the rock for building, 
for road ballast and for grinding to put upon the 
soil. 
Upon this scene burst a class of students, eager 
and curious to note everything, like happy children 
out of school, climbing over the heaps of debris, 
shouting merry jests and making exclamations of 
surprise as they note the many curious revelations. 
Here, by the railroad embankment, newly made, 
spring up blue grass and white clovers, their roots 
in the crumbling limestone of the ballast, eloquently 
telling how waste soils may be restored and covered 
over with vegetation where lime is. To our left a 
tangled jungle of old dry weed stalks standing upon 
heaps of limestone debris, and as we plunge within 
this jungle we find the weeds are mostly sweet 
clover, growing huge and lusty, laden last summer 
with flower and yet bearing seeds. Think of the 
