268 



The water naturally brings in tlH> alyae. wliicli grow in great variety 

 and al)unclance. Lichens are not very abundant and are usually found in 

 the higher parts. The peculiar soil formed from powdered limestone 

 forms a muck in which a few species of mosses grow, but not in great 

 abundance. A few very poor specimens of Equisetum arvense were found 

 in quarry I^. having come in from the gravel bed of the railroad which 

 runs on the north bluff of this quarry. 



Of tlie Spermatopliytes the mouorotylcdons are the tirst to appear, the 

 hydrophytes leading and invading tlie iionds. Of these the most showy 

 is the Typha latifolia L. (Fig. 1», wliidi w:is very abundant in all three 

 (piarnes. Around the margins of these ponds tlie sedges were very 

 abundant, gradually giving w^ay to the grasses a little fiii-ther back. 



Of the dicotyledons, the Avillows (Sali.x. sp.) and sycamore (Platanus 

 occidentalis L.) were the most conspicuous (Figs. 1 and 2). The willows 



