CONTENTS 



Page 



Ecology of the Plankton Algae in the Palisades Interstate Park, 

 Including the Relation of Control Methods to Fish Culture. 



Dr. Gilbert Morgan Smith. 95 



ILLUSTRATIONS 



PLATES 



Plates 3-24. Plankton Algve of the Palisades Interstate Park. . 152-195 



FIGURES 



Figure 18. Pumping samples of the plankton from Carr Pond, Palisades 



Interstate Park. Photo by Keller, 191 8 126 



Figure 19. Applying copper sulphate treatment to Carr Pond. The copper 

 sulphate is suspended in loose-meshed bags at the rear of the 

 rowboats. Photo by Keller, 191 8 13 2 



MAPS 



Map I. The Harriman Section of the Palisades Interstate Park 9-1- 



Map 2 The Park region, showing relation of the type of plankton flora to 

 the geological formations. Lakes of the Caledonian type are 

 shaded, those of the Baltic type are unshaded. The lakes are: 



I, Cromwell; 2, Long; 3, Popolopen; 4, Mine; 5, Barnes; 6, Lower 

 Twin; 7, vSummit; 8, Upper Twin; 9, Forest; 10, Cranberry; 



II, Mombasha; 12, Little Dam; 13, Echo; 14, Cedar; 15, Island; 

 16, Green; 17, Stahahe; 18, Little Long; 19, 20, Kanahwauke; 

 21, Queensboro; 22, Hessian 1 16 



Map 3. The Park region, showing lakes that bloom and their relations to 

 other lakes. Note that the old artificial lakes and the arti- 

 ficially enlarged lakes in the belt of precambian gneiss, whose 

 boundaries are shown by dotted lines, do not bloom. The lakes 

 that bloom are shaded; those that do not bloom are unshaded. 

 Geological formations, symbols for different types of lakes, and 

 numbers of lakes are as on Map 2 121 



[93] 



