BIOLOGICAL EXAMINATION OF LAKE GEORGE 437 



of quillwort, Isoetes and /. tuckermann macrocarpa in the edges: 

 there are also similar tufts of Sagittaria graminea with only the stubby 

 basal leaves developed. But where there is sufficient shelter to avoid 

 burial of its tuft-forming leaves by the sand, the pipe wort, Eriocaulon 

 articulatum, comes in and forms a complete ground cover. About the 

 edges of the mats of pipe wort are always a few water lobelias, Lobelia 

 dortmanni, and the slender white stems of the former and the purple 

 stems of the latter shoot upward together to the surface at flowering 

 time in August. 



At the west and about the charming little Boquet Island large fresh- 

 water mussels abound wherever there is enough soil accumulated 

 among the rocks to give them footing; and a little farther away to the 

 southward the clay bottom about the Ranger Pool is fairly covered 

 with a little translucent white clam, Sphaerium tenue, having siphons 

 of a charming rose-pink color. 



Shelving Rock Bay on the eastern shore of the lake a mile south of 

 Pearl Point is a very fine collecting ground, having in close proximity 

 a large variety of aquatic situations. A charming mountain brook, 

 spring fed and full of trout, enters the head of the bay. A storm-wave 

 reef across the head encloses a marsh of a few acres mostly overgrown 

 with sweet-bay, but having small areas of open water, where pike and 

 bullheads spawn. So great is the abundance and variety of marsh life 

 found here that I can hardly specify particulars. I will only mention 

 the abundance of desmids among the algae, and of the clusters of the 

 bryozoan, Lophophus crystallinus, about the bases of emergent sweet- 

 bay stems. 



The bay itself has a broad quietly-sloping wave-swept sandy beach, 

 one of the finest on the lake for a bathing beach. Further out toward 

 Iroquois Island, in 35 feet of water are fine beds of Nitella opaca and 

 just beyond that Island the bottom drops away to nearly 200 feet. 

 Northward behind Log Bay Island is a sheltered harbor, and on the 

 way into it are some fine mussel beds and then broad shoals densely 

 covered with pipewort. 



At the head of Northwest Bay on the west side of the lake, where 

 another mountain stream enters through marshy lowlands there is 

 another rich collecting ground. Here young fishes and minnows are 

 exceedingly abundant, and everything that is needed to fed them is 

 here also. Submerged logs in the stream are plastered over with colon- 

 ies of the bryozoan, Pectinatella magnified. 



At the foot of Black Mountain on the eastern shore is Chives Rock, 

 so called from a species of chives (Allium) that is said to grow in the 

 narrow crevices that traverse its broad face. It presents a broad flat 

 surface to the waves and rises directly out of rather deep water. We 

 found this an especially good place to get a line on the lotic insects of 



