148 



velopment here, forming an immense patch intermixed with other plants. 

 Among other phmts which frequently come down to the water's edge, but 

 wliich are most abundant on The lake plain or in its ponds, are cat-tails, 

 Calamus, and some Phrof/iuites. 



The chief representatives of the short-stemmed aquatics are Naias 

 flv.riUs and Chara. Naias grows in scanty patches nearly eveiywhere in 

 the shallow water near the shore. There are occasionally very dense 

 patches. Such were found in 15;M30, midway between the Biological Station 

 and Willow point, near the mouth of Clear Creek, and out in front of the 

 laboratories. There was also considerable on the west side of the lake 

 near the shore. 



CHARA begins at the southwest corner of the lake and covers a con- 

 siderable area there. Then it stops until near the neck of the channel 

 which lies between the lake and West Bay. It covers nearly all the 

 bottom of this channel, and extends in a good way, about 300 or 400 feet 

 nearly all around the bay. except for a, distance along the western side, 

 where it is mucky. Another patch of Chara occurs, mixed in with Naias, 

 -•in front of the Assembly grounds. The specimens of Chara found in this 

 latter place were much larger and longer than those found elsewhere, and 

 were fuller of fruit. 



SC'IliPVS LACVSTRIS is the most abundant and conspicuous of the 

 li^ke plants. One belt begins about 200 feet north of Chicago Hill pier. 

 From this place it extends, with the exception of a few very naiTow In- 

 terruptions, almost to Yarnelle's point, where it thins out and wholly dis- 

 appears for a little way, its place being occupied, as before noted, by 8. 

 awh'lcanns. Not far north of the landing, however, it begins again and 

 extends up to the channel, and runs far out into a sharp cape at this 

 point. There is another small patch in the middle of the channel, which 

 is cut in two by the steamboat ti-ack. This plant fringes the outlet bay 

 quite thickly, and then occurs again at the mouth of the canal which leads 

 from the lake to Warsaw. Another strip begins at the channel and extends 

 up to the red ice-house. There is a broad region bare of any Scirpus all 

 along the Assembly grounds; its absence here is in all probability due to 

 artificial removal, for the conditions of growth are in every way favorable. 

 The last patch begins along Willow Cape and extends far out into the 

 lake, and grows along the shore until a little north of the laboratories. 

 This leaves a large gap until nearly to Chicago Hill pier. This plant seems 

 to delight in a soft, marly soil, and does best in rather shallow water. Its 



