267 



tne western end; small stream runs the entire length from east to west; 

 another much smaller stream from a spring- enters on the north side, 

 spreads out fan-shaped and joins the main stream. A small marsh in 

 one part of quarry. Heavy woodland on the south. 



Quariy C— Very little larger than B and about twenty or twenty-five 

 years old. Extending north and south; first work at north end; small 

 stream runs through north end; large pond in south end. Almost sur- 

 rounded bv thin woodland. 



'fliH 



Fig. 1. 



There is no soil in these quarries except the small amount incidentally 

 carried in by the workmen, by the wind, by the streams; and the pow- 

 dered limestone soil, the result of blasting and crushing. 



Although there may be many factors bringing seeds into the quarry, 

 the two principal ones are wind and water. 



The order in which the plants appear in these quaiTies is as follows: 

 Algae, lichens, mosses, scouring rushes, monocotyledons and dicotyledons. 



